I need help understanding all the terms here

[HTC_Noob]

I love this site and I just registered here. I have a new HTC touch pro from Verizon and I was looking to upgrade the stock rom. The only thing is, is that I am such a noob when it comes to tech words and stuff. I was wondering if anyone could help me out.

What is the difference between kitchens and roms and bases. Also, what is manila and rhodum and flo3d. Aand what is the main difference between wm6.1 and 6.5

I'm sorry if these questions are stupid but I am just all new to this scene.

One last thing. What is your favorite rom and why?

Oh and which ever rom I use, I will surely donate to the author. I might be a noob here but I have money!