This is actually a very simple yet often overlooked question. This entire forum is mired in focussing on little things like advanced PUA techniques, DJ bootcamps, etc when we should be paying much more attention to the fundamental process of self improvement.
In my experience women like good looking, tall, attractive, jacked up dudes who are ripped, have great social status/skills, have great sexual awareness and are great in bed. I was a male entertainer/stripper for three and a half years and have made tens of thousands of dollars off my looks, and like to think I generally have a reasonable idea of what most girls find appealing.
The good things is that apart from height, most of us have the potential to change and become all of the above mentioned things. If you're lean and strong, and have a good amount of muscle mass you'll be attractive and have a much easier time feeling dominant/confident. Similarly you can work on your career/education to improve your income. Social skills come about with practice, and learning social skills, as does sexual ability. Being in great shape will mean that you have the potential to be good in bed as you can phuck for longer and can go harder. Girls love being thrown around, and you'll be able to do this as well.
I think we have it much easier than women in modern society because guys are judged much less on looks and more on actions, and personality. Although we are being judged more and more based on looks, its still not nearly as much as women. There are many factors outside of looks that are easily modifiable with sustained focused effort that can make women fundamentally more attracted to you.
Instead of learning game, pick up techniques, and formulas for when to call her back, focus on self-improvement... Get in the best shape you can, get a good career/business going, be social, be sexual and give back to society without expecting anything in return. Treat people well and be happy. Don't forget to have fun a long the way. We have it pretty damn good at this point in human history, and there's really very few legitimate excuse to not be successful w/ women and life in general in most western liberal democracies.
I highlighted several of the aforementioned points in a thread not too long ago:
http://www.sosuave.net/forum/showthread.php?t=180109
Just me 2 cents...
