I'm sure any questions you have the forum members here will be happy to help if you post it up, there are several good guides stickied in the various forums too, it wouldn't hurt to check those out.
So far as putting a computer together is concerned its pretty straight forward and most hardware comes with pretty concise instructions these days, there are common pitfalls such as not firmly seating the ram or incorrectly installing the CPU heatsink but you'll get the hang of it real quick.