Sorry, can't recall anything in particular that I used. I'm a pretty handy person to start with, nothing about the system was complex except for building scaffolding to pre-assemble the metal pipework that formed the frame for the array(s). I used a company (then called Wholesale Solar) to design the system and buy the parts from, which made it all pretty simple.

I did have to take a very challenging exam to get licensed by the state for "home owner solar" - much harder than I expected given the NEC sections and the fact that it was open book.