Good night, friends! So, I recently got hooked on Tvariny's streams (about a week ago), and I discovered him on Sk2tv. After watching the stream, I had a strong desire to start playing Heroes 3, but then the question arose: "Where do I even begin?" I mean, I need to read a bunch of threads about game tactics, for a particular Castle, read a bunch of "tips," which heroes are best to choose, what skills to upgrade for them, learn how to effectively fight monsters, etc.
Basically, the question is: should I start playing against the computer on 160% difficulty? (Just to get used to it). Or should I play against a real person?
(I'm also taking into account that I've played Heroes before... but I didn't really delve into the game).
I need to practice and improve my "skill" somewhere. Threads and guides are good, but how is the best way to approach the practical part, or rather, "from which angle"?

I would also like to exchange Skype contacts with local experts so that, if necessary, I can quickly and easily get answers to my questions. They say you have a good community, unlike Dota and Starcraft players. I really hope for your understanding and kindness.