This thread "teaches" you how to "become better" and is more in-depth.
Guess everyone has their own opinions and ways of improving.
By the way, you seem to be talking about autoconverts,
which is a realrealrealreally bad thing (except for super beginners). You shouldn't even be mentionning them if you want to help newcomers. They don't teach you shit about how to play osu!mania (You understood that, be sure to mention this in your post haha). You might be good at playing Scarlet Rose or the Big Black, thinking you're boss and all, but you'd be terrible when facing mania-specific beatmaps (which btw don't support K mods).
You make o!m sounds like it's EZ mode. Lots of details are missing. :/