Run away from the whingeing types that complain about "women who always go for the good-looking bad guys and ignore the nice ones like me". These men have very low self-esteem and tend to be obsessive stalkers. They will also try to guilt-trip you into seeing them more than once, even when your own instinct keeps telling you to ignore and move on. Trust your instinct!!!
Keep away from the ones who use the phrase "I am not like all those other a$$holes out there". They usually are the worst kind of a$$holes.
If some guy looks and behaves like a freak, it is because he IS a freak. Ditto, run for the hills and don't feel guilty about it.
Do what you feel comfortable doing in the time you feel it's right. Don't give a $hit what other people think you should do. You are always in charge, after all, it's your own search for the man of your life.
Don't feel pressurized to give explanations when you refuse contact/a date/a followup. Just say "NO" or "That just doesn't work for me". Remember once again, you don't owe anyone your time or effort.
Oh, and don't forget: you are having fun with this. Relax and enjoy, and never let any "date" make you feel bad about yourself. Don't get too attached on first/second or even third dates. It is, after all, a game. Take "failures" with humor and laugh about yourself. It is much better than taking things personally.
Good luck!