Hey folks. I'm sorry that this is probably in the wrong section or breaking some kind of rule, but I'm a complete newcomer to Brawl hacking.  And the forum. I honestly don't know the first thing about either.
I see that there are a lot of guides here for beginners like me, and I'm going to be filtering through them at some point to learn how to do all this stuff. Namely, just downloading characters.

My current situation is that I'm going to college and we all love Brawl on our floor. I figured it'd be a fun activity to hack in a bunch of new characters and surprise them all with them.

My problems are, as I stated, I don't know the first thing about Brawl hacking. So the first favor I'd like to ask: could someone point me in the direction of the best, clearest guide to go from an unhacked Wii to being able to import new characters?

Second of all, I need you guys' recommendations: I want to include brand new characters into the game. But not just reskins or remodels: like full moveset-changing PSAs. Things that'll really change up the game.
For example, that Waluigi hack that's going to be completed soon-ish is a perfect example of what I want. A well-made hack of a new character with its own individual balanced moveset, and as a bonus, has its own sound effects, portraits, etc. A lot of work went into it.

I'm looking to ask you guys if you could also point me in the direction of what YOU think are the best hacks to come out of the Smash community (not just here, btw). I'd really like to introduce some new variety into my game, and the best-made characters will do the best job at that.

Thank you all so much!