OK so work has been kicking my ass over the last week - sorry about the delay in replies.
1. How do you pick up the girls that aren't sexually active?
2. How do you turn on a virgin?
3. Do you recommend dating close friends?
1. This question is a little broad. First of all, it's illegal to pick up a large subset of girls that aren't sexually active. Familiarise yourself with the laws in your state or territory. In terms of the legal girls, it doesn't matter whether they are sexually active or not. Game is game. All girls recognise game. If you have game you will be getting ass.
2. I would turn on a virgin the same way I turn on a regular girl...i.e. well calibrated escalation. Virgins still have a clitoris and can still orgasm via cunnilingus. Last minute resistance against sex will always be stronger with virgins, so it helps to have an academy award winning spiel that will convince her that sex is a good idea.
3. I say we get to the crux of this question. You ask whether it is a good idea to 'date' close friends. When it comes down to it, you really just want to score some trim. Your close (girl) friends WILL fuck you as long as they believe you have the ability to keep it DISCREET. As long as you can communicate this quality effectively, they will all want to share a naughty little secret with you.
MasterPUA, try this one.
How do you let a girl know that you aren't looking for a one night stand, and don't necessarily want to pick her up but would like to get her number?
Girls are big on authenticity and honesty. That's why the guys getting puss can get away with lines like 'I want to ravage you like a wildebeest on viagra'. Lines like these show that you are not denying your desires as a man. Most guys tend to go in 'under the radar' and try to become the girls friend/confidante/shouldertocryon before suddenly saying "SURPRISE, I HAVE A DICK!!!". Of course this freaks the girl out and she is outta there quicker than Usain Bolt on cocaine.
The problem is that most guys are not CONGRUENT in their behaviour from the beginning of the pick up to the end. This communicates that you have something to hide and/or that you aren't comfortable with who you are (unattractive qualities obviously).