From your recent posts........
You'll want to start up top in the stickies.
Read the Prom intro by Traxion first.
While some of it is old info, it still has good info and is written for the beginner.
Then read the other stickies. A lot of the tuning stickies are for ecms other than yours. Read them anyway. You'll pick up info from all of them.
Then go back and read them again. And again.
You'll pick new things up each time.
And as always "start slow & take notes"
With your setup, you'll want to find a stock vehicle to play with to get all of your hardware settings figured out and get your feet wet changing simple things.
Once your comfortable, go through the bin you pick out for your car and start changing all the thing you'll need to for your combo.
Idle speed, egr, air etc. You can do searches on how to turn these off if they are missing from the stickies. If you find a good thread that's missing from the stickies. Post a link in the suggestion stickie so others benefit from your time also.
This makes a great winter project