Hello, I'm new to this mod stuff and dont quite understand it but as far as questions go I onley have one.
If a mod has one or more downloads, For example the mod manager, wich one do I download?

Best bet is to read the description tab for the mod in question, it should tell you what you need, and which downloads you are going to want.

Thanks so much

Guess you mean http://www.tesnexus.com/downloads/file.php?id=2097? Go for the obmm 1_1_12 full installer as it's easy to install.

http://sites.google.com/site/oblivionpoinfo/newerusers

http://sites.google.com/site/oblivionpoinfo/installation