Recently I've been looking at new hard drives, particularly SSDs and SSHDs, but since I've never modified or built a computer or laptop before I'm not sure what kind of hard drive I need to be looking at, SATA, SATA III, mSATA, USB, Thunderbolt etc, and I'm also not sure whether a 500gb SSD would be worth the extra money compared to a 500gb Solid State Hybrid.
Moreover, since this laptop by default comes with 4 ~500gb HDDs and part of the reason I want an SSD is for a lower boot time, how do I move the OS from the default HDD onto the new hard drive once it's installed?