I have to second what skittish doe mentioned about reading some bdsm or D/s fiction...here or elsewhere (they have some pretty hot stories out there if you're into that). One series of books that I'm currently reading may be of interest to you. They're The Marketplace series and although I haven't yet masturbated while reading them , I NEVER say never.

I'm relatively new to this as well and I've always sort of been a "researcher" before I try something...so I applaud your question(s) and I hope that you get some really helpful answers...the hard limit questionnaire is a bit lengthy and somewhat geared towards an already established D/s relationship but it wouldn't hurt to go through it and google what you don't understand...so that if/when the subject does come up (and it will, believe me--lol), you will at least feel confident in discussing it.

Good luck to you in your journey!

ps--the forums have A LOT of information so read, read, read!!