I need a really quick breif lesson to make me elevate quickly, so i can crack on with elevation in rapping. OK

im stuck with rhyming words and where to end the rhymes at, rhyme scheme i also get confuzed about, and struggle with wordplay and multies, even though sometimes i use multies without knowing but not rhyming lol. I can be really creative in battle but just need someone to go through everything with me and it'll be much appreciated. thanks