I performed this fix several years ago, it wasn't that bad. In fact I didn't even use a spring compressor as it was much easier to use the carjack on the control arm to compress the spring when bolting it back into place.
Like Juggernaught said, find an online tutorial. I think I used one from the forums that was merely pictures & text.
Ended up just getting two new stock springs from Tischer to keep costs down. Pic of my busted spring on the left:
