Just be gentle with your parts, thats really all you can do.
You should always double check whether your parts are 100% compatible, or work together. What I do is for example, with my mobo, I went to newegg... and looked at all of the reviews. I crtl + f (find) the exact same parts ex. the AMD Phenom x2 555 3.2Ghz, I checked to see if it has any problems with windows 7 (the original board I wanted to get had clock issues).
It looks like your parts should be good though, especially if some are in a bundle.
Good luck on your build! again, be careful if its your first time.