Alright so I'm 21 years old (male) and have recently gotten out of my first LTR, which lasted a little over 3 years. She broke up with me, and I've been kind of a wreck lately. She was the only girl I've ever done anything with too (sex, intimacy).

So I've been trying to piece together my life and I realize I have no idea how to get girls. I've been browsing this reddit and I see that there is lots and lots of information out there.

What I'm asking for is if anybody can tell me what the essentials to read are. Maybe a concise guide to get me started? I'm really a total noob, so I'd just like a step-by-step guide on what to do. I'd like to know how to attract women.

Also, I'd really love to get back with my ex, but she seems to have crushed all hope of that. If anybody has any advice on what I can do in that situation I'd appreciate it as well.

Thank you very much. Please help turn this AFC into a AM!!

EDIT: By the way, she didn't break up with me because of cheating or anything like that. She just told me just doesn't feel the same towards me. Like our relationship lost its spark. I would really do anything to get her back. She was a solid 9, and I feel withdrawal like symptoms every day (this happened a month ago). We started going out in High School, and I really don't remember how I managed to get her. I feel like I was a different person back then

EDIT2: How likely do you think it is for me and the ex to get back together? Do girls ever come back to their boyfriends after breaking up with them or I should I just consider this the end?

EDIT3: Many people are saying cut off all contact and delete from facebook (my ex), but one thing people don't know is that we still share a close circle of friends and activities, as well as attending the same uni. Are those really realistic (or mature options) to just cut off all contact? I'm going to see her on a weekly or bi-weekly basis. What do I do in this situation?