Getting upset won't help you. If you have endless time for this project, you will probably figure it out. If you require it to be completed sooner rather than later, retaining the services of a professional tuner becomes a reasonable option.

I went from carbs to flash memory systems (OBD2) - never bothered with chip systems - so I am not trying to sell you anything, merely offering a voice of reason.

Learning how to tune takes a great deal of time and effort. Learning how to tune well, takes even more of both. I own just about every book ever published, with respect to OBD2 systems and tuning, and have invested thousands of hours in developing competency.

You don't become a decent tuner overnight. Some never get that far.