OK - please don't take this in the wrong way, but the first step should be to get your teminology straight.
"Artificial Intelligence" unfortunately has become an overhyped buzzwort implying something that doesn't exist anywhere - because no one has succeded in programming a true artificial intelligence anywhere on earth.
The closes any programmer has come to that is something called an "expert system" - basically advanced search algorithm for enhanced databases. You'll find a lot better results searching for that term.
In the area of gaming the thing that is usually called "AI" has actually nothing to do with intelligence or expert systems - a gaming AI is a set of preprogrammed responses along the game rules that simply mimics what the programmer thought would be the best strategy for that part of the game, limited by the need to allow the player to win.
The problem here is that there is no intelligence here at all, the scripts are always specially tailored to the specific games. And even then difficulty is usually created by cheating and giving the computer players additional resources, and not by having them use the rules with more intelligence.
And the same applies to everything else that is called "AI" today - it usually uses very specific scripting to pretend (and often fail in it) to have intelligence.
And that is why there is no specific course or tutorial for this - only general tutorials that are far from implementing anything, or specific instructions that do not work outside their specific area.
You need to specify what part of that large area you're interested in, and even then it is likely that most people here on the board are only interested in something like "gaming AI" which is too dependent on the game rules to have any good tutorials out there.