How to find my specs?

Hello. I just got an iBook G3 Clamshell from my Sister-In-Law, and I LOVE It. It is running OS 9.2 and I am curious to see the specs on this computer. I don't have much experience on OS 9. Lol. When I go to "about this computer" it says I have 96 mb. of built in memory. How much ram could I add to it, and what is the best OS on it? Could I dual boot it to run say OS 9.2.2(Current OS) and say OS 10.0. I think I can go up to 10.4.11 but I imagine that would be a painful experience. Basically if I can get some version of 10.xx I'd be a happy camper. Thanks guys!