The last video editing I did was several years ago, and I haven't closely followed it since I retired. However, the basic principles still apply. As a noob, I attempted a video for an in-house presentation for a major corporation and was using a weak video card. It was an experience in frustration and an agony of tension. I gave up and upgraded, particularly the video card I was using and the difference was between night and day. Suddenly I actually enjoyed the work I was doing. The overall principle is to build with the highest performance you can afford.
Here is a link to some suggestions: http://www.logicalincrements.com/articles/videoediting/
If you run in to problems, one of the best "go-to" video information sources is VideoHelp.com. A lot of pros in the industry hang out here, so if you approach them politely they will be glad to help you. Take a little time to investigate the site, it is huge with an immense amount of information. These guys helped me through some tricky situations when I was in to it.