I own the same software for my 2003 S10 Vortec. I won't lie... You will have to do a lot of reading. I would start with the tutorials HP Tuner offers on their website. Also, I would buy a book on how EFI works so that you understand how the computer thinks, and which sensors are primary and which are secondary. Changing things with the PE might cause other issues to pop up immediately. I have probably about 120hrs of research and reading into mine. I also have about 50 hours or programming time and learning how it affects my truck. I have 15 years as a computer tech and programmer, and the automotive stuff is an animal in itself. However, you will not regret learning this stuff. It will make you appreciate the power of the technology you are working with. Good luck.