For the hard drives now...Should I purchase a Solid state drive? If I will, it is going to be a sata 3 (60gb). Could you reccomend me some?
I will also purchase a WD caviar black sata 3 1TB or 640GB (or should it be a sata 2 if I have an SSD?).
I would also like to get 8gb of RAM but i dont know anything about it and I wouldnt like to spend too much money on it.
For your purposes you can go with an i3 or non-K i5 and H61/H67. It will restrict you from overclocking but you won't need it for your uses. GB and MSI are both big companies and will have similar quality.
For the games you play the video card should be fine.
8GB of RAM is nice but I doubt you need it. I only use more than 4GB when I play WOW and do like 20 other things.