Once the car is running that is the point of which it's your turn to start tuning it!
Tunerstudio is very well documented as are the tuning procedures in the manuals posted on my site - https://thedubshop.com/megasquirt-manuals/. Each car is different and that is why I can only offer a base tune. I've never really sold the same package twice nor is any 2 engines identical. If you are uncomfortable with tuning I do offer online lessons and a few different tuning services depending on what you need help with. This can be as simple as us scheduling time for me to give you a TunerStudio lesson by walking you through the tuning software.