Sure, I'll do my best to get it right.
Brawl+ is kind of a hacked Brawl that plays differently. It has different physics designed to make the game faster and more about combos than it is now. They also removed things like random tripping or time limits for replays. To some degree, it was made to play more similarly to Melee and it is considered more competitive, but it doesn't have the glitches melee had (wavedashing and L-cancelling for example.)
Some people consider it more fun, personally I think it's just different but about as fun as normal Brawl (or, like they call it, vBrawl, or vanilla Brawl.)
As for how to get it, you'll have to research that yourself. sorry.
Brawl+ is kind of a hacked Brawl that plays differently. It has different physics designed to make the game faster and more about combos than it is now. They also removed things like random tripping or time limits for replays. To some degree, it was made to play more similarly to Melee and it is considered more competitive, but it doesn't have the glitches melee had (wavedashing and L-cancelling for example.)
Some people consider it more fun, personally I think it's just different but about as fun as normal Brawl (or, like they call it, vBrawl, or vanilla Brawl.)
As for how to get it, you'll have to research that yourself. sorry.