Memory: G.Skill Ripjaws X Series 4GB (2 x 2GB) DDR3-1600(Will upgrade in future)
Optical drive: Lite-On iHAS124-04 DVD/CD Writer
Operating system: Windows 8 OEM 64bit
And if they're compatible, what do i do if i get a bad mobo, bad ram or something, and i'm not sure that it came DOA, Is there a piece of equipment that i can buy, that will tell me the problem of my PC when building if a problem arises? Or ways to check when they come?
They are compatible. If one (or more) of your parts don't work in the 1st 30 days, return them to where you bought from for refund/replacement. After 30 days, you will have to deal with each components manufacturer and their warranty program vis their RMA process.
As far as building and troubleshooting,there are a number of guides here (and elsewhere) and lots of videos available on youtube and the like.