Many thanks CK

Are they easy to install? Is there some sort of auto install or do I need to enter them manually?
Sorry for all the questions, I'm noobish to mods.
Im a newb modder as well, started in morrowind because I found it so easy in elderscrolls. Most modders make mods which all you have to do is drag files into a data folder then tick it off in the data files menu when you start up skyrim (i think the game automatically checks them for you though). Once the creation kit comes out in january, I also would expect to see self installing mods as well but those are more rare since its easy for us just to drag a folder. Overall most mods are easy to install though there are some that may require more complex measures, like a mod installing/management program depending on the mods complexity. I avoid those since they are usually things which change my game too much or are not what im looking for in a mod.
If you are a bit fearful like I was at first, start with a small mod that adds something small or changes something very small to your game, like an armor retexture or maybe a new type of weapon. Once you do one you will start to get addicted and start hunting down mods. For now the mods are very iffy, since many (although they are doing wonderful work without it) are using other programs and not the skyrim creation kit. I myself am using the less blocky faces mod and a mod that modifies my solitude home to add a smelter, grindstone, tanning rack and anvil.
Go mod my friend and enjoy! Just be wary and READ USER COMMENTS and VIEW SCREENSHOTS are my 2 pieces of advice before altering skyrim to make sure you are doing it justice.