Where did everyone get their knowledge?

[Jezza_hr]

I'm curious as to how some of the people on here came to understand what they know today. I know that chassis tuning is something relatively simple compared to engine tuning and have picked up a fair bit over the past year. However my engine tuning knowledge is quite low and am curious as to how most of the people round here got theirs. I find myself reading through various threads here and understanding certain bits and pieces but then it gradually goes out of the window and all I see is numbers

So if you can share some info on how you came to teach yourself or the best way you would considering teaching yourself would be then it might give me a little insight on what I can do to further improve myself and others.