That is a good question. There must be lots of info about fundamentals on GC, probably bits and pieces. Your fundamentals may also change as you progress. For example, you might learn that you should give a girl good look in her eye, and don't move your eyes away. If you are shy you might have problems with it at first. As you progress and your confidence and experience increases, you may find out that you are already giving her a good look and not moving your eyes away, without even thinking about it. You progress, it simply became your nature...
So in stead of talking about tens or hundreds of things that belong to fundamentals, try to focus on major areas.
1. Your life. You want to be "a man". You want to do manly things. This will setup your natural male frame without even thinking about it or learning it. It is natural for girls to gravitate towards "man". Girls don't want silly mama spoiled boy, they want mature, more dominant and independent man
2. Your health, physical and mental. You want to be healthy, vibrant, have vitality. Exercise, lift weights. Eat healthy, avoid sodas, sugar, processed meals. Drink water only. Learn martial arts if you can. For example, lifting weights will give your higher levels of testosterone. Fighting (martial arts) will increase your natural confidence, you won't be afraid to stand up to other men. You will naturally become more aggressive, stronger, leaner, muscular, more dominant... You will be healthier, you will be in great shape. Your brain will get more oxygen and better nutrition, you will be more positive. Your body language and overall mental attitude will much improve (e.g. compare it to weak/fat guys). So just by doing simple manly things you will setup great manly frame. You won't have to pretend confidence, you will be more confident. If you don't have health, you simply have nothing...
3. Have a long term goal in your life. This is related more to your mental frame. I don't know what you like, chose something and go for it. Study science. Fix motorcycles. Open business, play chess, write books, study science, lift weights, join political party, whatever. Basically, this is your LONG term goal and frame. You have a life to live for, you have a great passion, you love to do some things over and over, for years. Very important, don't just drift through your life without purpose. This is your #1 goal, this is at the top of your list of importance. Girls are only #2, if not #3. Girls are NEVER #1. Remember that, girls don't want to be your Number 1. By having a goal, by living your life (and not being too focused on girls), you will naturally increase your natural attraction multiple folds
4. Looks. Take care you yourself. You don't want to be a model with faggot moves, but you want to look nice. Wear good and neat clothes, clean your nails, wash your hair, shave. Change your socks. Don't be a bum. Clothes you wear tells A LOT about your personality. Clothes ARE you, you ARE your clothes - she looks at you and within seconds she decides whether she likes you or not. Many times all she can see is clothes only... Clothes tell if you are negligent, if you don't care, or if you are too uptight. If you are just casual/boring or if you care about life. If you are rich or poor, sometimes what job you do. If you are extravagant or simple. If you are clean and care about your health. If you are hiding your fat belly, and other stuff. If you look good and take a good care of you, you will increase your chances to meet great girls, girls do care about looks...
5. Meditation and relaxation, especially if you are anxious type. Nobody wants to be around nervous and uptight controlling guy. You want to be relaxed, cool, non-critical and non-judging guy. Girls love to relax around guys, they want to feel good and sexy. So first, you have to feel good and sexy about yourself, and once you can do it girls will be feeling great around you, they will want to be with you...
6. Money. Yes, you want to have money, forget the nonsense of being happy without money. You want to travel, you want to afford live in a nice place, you want to get good meal in great restaurants, you want to take good care of your family. You want to drive good car. You want to save for your retirement because you don't want to rely on anyone else. You don't want to worry whether you can afford to pay rent for next month or not, you want to sleep well. At the same time, you don't want to live for money only, you don't want to chase money because there is much more in life than money. You simply want to have enough and be comfortable enough. Money is far away from bringing happiness into your life, but it is a big part of being happy... The more money you have the better chances you have to meet, and keep good girls...
7. Social life. Yes, you want to have good friends, good social circle. You want to be comfortable with people, you want to feel comfortable while around different people. If you are a nerd, maybe you want to get a job where you have to deal with people on daily basis, simply practice human communication and interactions. Be around people, at least pretend to be normal, lie if you have to. Try to smile. The better your social life the more chances you have to meet great girls...
8. Spirituality. Are you just a plain ignorant? Blind believer? Do you really care about God or just repeat blindly biblical verses that your parents beat you up with over your thick head? Do you steal and sell drugs while having Jesus tattoo on your chest? Just pretend to be a nice guy during Sunday's churches? Well, that is up to you only, but you should have some spiritual life. Maybe there is something else beyond this world, who really knows..?? Help other people, learn compassion. Learn empathy, learn emotional intelligence. Learn about suffering of this world, learn about all miseries this world can bring upon people, and learn all about happiness... If nothing else, ask the girls if she also thinks whether "everything happens for reason" like you do. Who knows, maybe this itself will get you laid...
9. Knowledge. Knowledge is power. Don't be dumb, don't be stupid. Learn seduction, learn about different areas of life. Get a college degree, it is not just a piece of paper. Get master degree, you can do it, don't be that lazy. Who cares that you got C's? Nobody will ever ask you one question about it. If nothing else you'll meet bunch of other people. Life is huge, life is not just about chasing girls...
10. Assertiveness. This is your life, don't let anyone tell you how you should live. Live it the way you want. Make it your way or highway. Don't negotiate with people, it is your life, not theirs. Go after what you really want, get what you want. It's better to be 100x sorry than not to try at all. Use your elbows if you have to, don't play a sorry ass victim, don't be a pussy, don't be touchy-feely immature boy. Try not to suck from the system, be self-reliant as much as you can...
So, maybe you can't see the "fundamentals" you are looking for at this time but they are there. For example, say you decide to lift weights and work on meditation, relaxation. Your body language will change, you will stand up more straight, while at the same time you'll be more relaxed and confident. You'll be more sexy, more manly, and will look into girls eyes with confidence. You'll have your life goal, thus you'll be more independent, more mature, less clinging and less chasing... Your clothes will tell that you do care, you have a self esteem, and you are not a bum. The restaurant you take your girl to will tell her that you can afford to treat yourself quite well, and you can treat your potential mate as well... She won't have to worry that she'll live in stress and misery, she'll relax, she'll be more comfortable, she will feel less critical and more sexy... She'll see that you are more mature and more independent... She'll see that you are going through your life with clear goal and determination, she'll feel that nothing will ever stop you in your way... Why wouldn't she want to be around guy like that - not just for one night but for many years? She would, she is not stupid...
