My only tip to anyone that's going to DIY. Read the manual. The entire manual at least once, if not twice, BEFORE you even put a wrench to the car. Usually the manufacturer's manual will give you little tips here and there. Also make sure you have every tool necessary. There is nothing worse than getting into the groove of things, then having to for an hour or two looking at your local hardware stores for the tool that you need.
If you don't understand anything in the manual, call them and ask, or just get someone else to install it for you. Since I work at a performance shop, the biggest nightmares are the ones where people bring me a car that's half done because they didn't know what was going on, and we had to fix it. Usually the labor is MORE because they had cut something they were not supposed to.