Hello Goodgirl,
There are good books that can help you with his desires. Many among many of the stories you can read here will help you as well, as most of them go into some descriptive detail on the how to of the stories.
May I suggest, however, that you and your boyfriend sit down and have an open and descriptive discussion of what it is that he would like you to do. 'Code words' need to be established, especially if he wants to be gagged...then 'Code movements or grunts' need to be fully understood.
Another necessity will be to learn how to tie knots, if rope is used, and how to tie them safely. Never tie ropes so tight as to cut off blood circulation or press too tightly against nerve pressure points. NEVER tie rope around his neck if you are not there monitoring him AT ALL TIMES while the rope is around his neck!Bondage can be extremely fun and erotic for both the top (person tying the other up) and the bottom (person being tied up) and bring a completely different experience into the bedroom. It just has to be done safely and slowly until you each learn your limits of how far you want to go. If he wants it to be painful...you have to be WILLING to administer the pain. There needs to be a bit of sadist in your psychology, as, people that do not will generally back-off from the administration of punishment and worry too much that they may be hurting their partner.
You have to be willing to continue to give him the punishment he wants, either up to the end of the session you have planned, or, until the safety word to stop the session is given, or, the safety word to 'go lighter' is given. Being a dominate person can be learned, but generally there has to be some desire to do it, other than the fact that your boyfriend wants you to. Remember...you have to have your fill of enjoyment too and if tying someone up so that they are defenseless against your spanking (or whatever) doesn't help with sexual enjoyment...being a Domme is not your pleasure.
Just my thoughts and advice.
Dana --EPL
P.S. There are several webpages that display all sorts of knot tying; text, tutorials, and videos; on how to tie basic and intricate knots. A search for 'tying knots' will bring up a slew of sites. Just pick the one that is easiest for you to learn from.
Also, in your discussion with him, he needs to be descriptive of the limits he is willing to go. Off-limit parts of the body need to be discussed. What type of instruments can or cannot be used. That sort of stuff. Your discussion needs to be free and open, without being judgemental of what his desires are. There are all sorts of different types of punishment which one can inflict upon another. Nipple clamps can be lightly painful to extremely painful depending on the type you use. Clothespins may be the best to start with.
If he had never been dominated before but has had a fascination of being dominated, you need to understand that he, too, is in the learning and discovery process.
Once you start, explore different things to do to him, and, if he doesn't give the code word to stop...continue to explore further.
Just some additional thoughts I had.
Dana -- EPL