First paragraph I'm just going to rant a little bit about what motivated me to write this post, if you're sceptical I'd recommend reading it, but feel free to scroll down if you just want to get to the techniques.
I've come across a few posts in /asktrp now of lads asking something on the lines of:
"Is it my fault or her fault that she doesn't cum?"
Since this is trp and we're all about dissolving the fantasy of society and manning up to that bitter taste.

It's always your fault.

Think I'm talking shit?
Read this post. Try out the techniques on your plate/gf tonight and get back to me.

Contents:

1. Truth about the Orgasm
2. Foreplay
3. Orgasm techniques
4. Best sex positions for orgams

1. Truth of the Orgasm

It's in the brain and it's all down to blood flow and muscles. If a woman is stressed, upset about the death of a loved one, drunk, hungover, on medication and most importantly, not attracted to you because you're overweight, the chances of her gaining orgasms are reduced. If I'm fucking my gf cowgirl and I tense my arms, she'll cum a lot faster. This also happens if I slap her. This is because everything is in the brain. The more a girl wants to orgasm the more she will. Think of how easier it is to spunk in a HB10 than it is to spunk in anything less than a 5.

Muscles

Orgasms happen when the pubococcygeus muscle contracts. During orgasms it will contract rapidly and send electrical impulses to the brain, which triggers the sensation of pleasure. When these muscles are weak the orgasms will also be weak. This is why you can't always expect these techniques to work at 100% capacity straight away, although you will definitely notice a difference. This is why over time you will notice the effectiveness of the techniques increase. Kegel exercises also increase the strength of the pubococcygeus muscle.

Blood

Blood flow into the pelvic area is essential for orgasms. The more blood the more sensitivity to the vagina, which means orgasms come faster and more frequently. This is also why exercise improves sex.

2. Foreplay

Foreplay is essential for achieving orgasms, as we said before it will increase blood flow and increases sensitivity in the vagina. We also need to get rid of stress.
Wash

Have a bath or shower with her because the heat will relax her muscles and increase her blood flow. Increased blood flow also allows pleasure and orgasm hormones to circulate around her body much faster and cleanliness also reduces anxiety.

Environment

The room you're fucking in should feel warm and comfy. Not a smelly dump. Turn the big light off and put a lamp on. Coloured bulb if you have one. Get good air freshener. Put some calm music on. It could be cafe chilled jazz, acoustic spanish guitar or solo piano. Point is don't put trash death metal on.

Massage

Look up on YouTube, there's plenty of tutorials on how to give massages properly. Again this increases blood flow and decreases stress.

3. Orgasms Techniques

A lot of these techniques are down to finger fucking. You might be thinking you're not a fucking teenager anymore and you've grown out of finger fucking. But don't disrespect finger fucking. With finger fucking you can be more precise and work on increasing a woman's sensitivity in her vagina, which consequently, makes orgasms easier and more frequent during full intercourse. The whole idea is that you're going to stimulate specific areas of the vagina with your fingers, increase their sensitivity, and then stimulate all the specific areas at once by ramming her with your dick. Don't neglect the finger fucking.

G Spot Orgasm
Biology
This orgasm will make her squirt (female ejaculation). All women ejaculate internally into the bladder. All women can learn how to ejaculate externally out through the urethra. When a woman is extremely aroused, her G Spot fills with female ejaculate and she thinks she needs to pee. So, she holds back. What she's really holding back is her G Spot orgasm. Her ejaculate comes out of her pee hole just like men. Now, you're going to train her to let it go. It's extremely important to make her trust you here. Without trust she will never let go because she'll be afraid of pissing herself. The main reason why there is this myth that "not all women can squirt" is because of this irrational fear of pissing herself. Tell her she won't piss herself, tell her it's cum and tell her she's going to have a powerful orgasm.

The Technique

The g-spot is essentially in the curve of the vagina. If you put your fingers inside and feel upwards you'll feel a ribbed part of flesh, a little like the roof of the your mouth. The g-spot responds to rapid pressure. You're going to have to pump it as fast as possible. Use your ring and middle finger and pull upwards, using the entire strength of your arm, almost as if you're lifting her up. Do this as fast as humanly possible.
Video here: https://www.pornhub.com/view_video.php?viewkey=1448472188

A Spot Orgasm

Find the A spot
Insert your well-lubricated middle finger into her vagina and run it along the front wall of her vagina. The A spot is also called the anterior fornix = “front arch” and is 3.5-4 inches in (about the length of your middle finger). The fornix is shaped like the rim of a frisbee and is smooth. It’s not as obvious as a real frsibee, but when you feel carefully, you’ll find it. Her cervix is in the centre of that frisbee and feels like the tip of your nose. Feel around for these “landmarks”, so you know where you are. Her cervix is the entrance to her uterus, the place where babies go. Most women who haven’t given birth find stimulation of the cervix uncomfortable, whereas most women who have given birth like cervix stimulation or can tolerate it. You'll find out for yourself.
The Technique

Massage her A spot. Curl the tip of your finger into her A Spot and stroke towards yourself as if you were saying, “come here”. Stroke quite firmly and rapidly. Also rub your finger around the rim of her frisbee. You're manually contracting the muscles that contract during A spot orgasm, so she has no choice but to cum. As she gets closer and closer to cumming, the deep back of her vagina will start to balloon (you probably won’t be able to feel this). Persist: Tell her to keep her body relaxed and massage her A spot for at least 15 minutes. If you don’t make her cum, STOP. Try again the next day. The first A spot orgasm is always hard because you have train her body and brain and your hand will get fatigued. Remind her that there is NO GOAL and it’s ok if she doesn’t cum. All she has to do is listen to the relaxing music, keep her breathing deep and slow, and keep her body relaxed.

C Spot Orgasm/cliterus

Biology
The cliterus is essentially a woman's dick. It's the exact same chromosome except in men in creates a dick in women it creates a clitty. It's no coincidence the the clit has the same amount of nerve endings as the entire dick combined. And just like a dick, it will become sensitive after too much stimulation. Imagine cumming in a girls mouth and she carries on sucking for a little too long after you've cummed. It's a very uncomfortable ticklish feeling, which women will also experience if you stimulate the clit for too long. So be conscious of that.

The Technique

Stroke her clit at the 1 o'clock position. Pretend her clit is the face of a clock and stroke it at the 1 o'clock position with the tip of your lubricated index finger. With your other hand, put your thumb in vagina and push down towards her anus. This will anchor her clit and make her feel secure. IT WILL ALSO FEEL LIKE SHE'S BEING FUCKED WITH A BIG COCK. It will also loosen her vagina up because you're pushing down on a ligament. Make each stroke 1 cm (0.5”) long at 2 strokes per second. Barely touch the tip of her clit at the 1 o'clock position with the tip of your lubricated index finger. Place the palm of your stroking hand over her pubic bone and apply some pressure to increase her pleasure. Sit on her left side with your left arm under her left leg. Your right leg will be across her waist. Put your left thumb in her vagina and push down. Use your right hand for stimulating her clit. Reverse if you're left handed.

Milking: Grab her clit between your thumb and index finger and milk it up and down.
Internal Clitoris: Make the peace sign. Stroke her outer lips with the tips of your index and middle finger and move them up towards her the tip of her clit. Stroke backwards and forwards. This will stimulate the internal clitoris which runs under her lips. The external clitoris is only the tip of the iceberg.
Clit Roll: Hold her clit between your index finger and thumb and “roll it”. For example, get a grain of rice and “roll it” backwards and forwards between your index and finger and thumb. Now, do the same thing with the clit.
The Hood: Rub her clitoral hood in circles. Most women masturbate this way.
Horse Bite: Grab both sides of her labia majora (outer lips) and squeeze, release, squeeze release etc. Your thumb will be on one side and your fingers will be on the other. Her engorged clitoris will “pop” in and out of her labia majora.
Kegel Pump: Grab both sides of he labia majora and squeeze. Tell her to do kegels. Her engorged clitoris will “pop” in and out of her labia majora like with the Horse Bite.

4. Best Sex positions

The best sex positions are the positions where you can move the most. The faster, the deeper and harder you go the better. Different positions stimulate different areas of the vagina (The areas we talked about in the previous section.) It's also important to note that the more the woman moves, the easier it will be for her to cum, which is why cowgirl positions are usually the best.
This website on positions is a good place to start: http://sexpositions.club/positions/113.html

Finishing note
The thing you need to understand about this post, is that it only touches the surface. I've been reading about orgasms and sex for a long time, doing a fair amount of research, and it makes a big fucking difference. When you can make a woman orgasm properly they will become addicted to you, because orgasms produce oxytocin, the bonding hormone. You can't just wing it or less you have a big dick. You might be better off than most with a big dick but you're still only touching the surface. Point is:
Do the research