Advice for all you car people!

I just downloaded the fsm for my 2006 nissan xTrail. Engine management alone is 1,500 pages.
Some days i wonder why i run this new fangled stuff.
I could almost memorize a 70’s workshop manual.

For someone new to old school,the basics are missing. I like the fact that the younger generations are picking up the hobby and are trying. But the difference has been mentioned, instant answers. Without them posters get frustrated.