I think it's alot easier than people make it out to be. Most things are actually color coded for you. Things will usually only fit into one spot. The most difficult part about building a system is finding out the best bang for your buck, and making sure everything is compatible if you ask me. Things like seating RAM and video cards couldn't be much easier, just line them up and set them in.
I'm sure if you make check that all the parts are compatible (things like motherboard/processor and the right number of pins on your ram) with each other and come back here for pointers everybody here would be more than happy to give your pointers on building your system, assuming they don't do that already.
There's also a few guides if you snoop around google for a bit.