I decided to build my own PC instead of buying a prebuilt one since it saves a bit of money. I already have all of my parts chosen, but before I buy I was wondering how difficult it would be to put the parts together. I have no experience building and I obviously don't want to break something I spent hundreds of dollars on. Can I build it 100% on my own, and do I need any extra tools/materials to assemble it properly? Thanks.