I don't mean just hopping on to Championgg, I'm talking the reddit main forum, opgg, lolskill, etc. Everything you can find. Read up on why certain things are good on your champ, and why others aren't. Find the optimal build paths, masteries, and runes used by the best players of that champion. Ask other mains questions, and of course practice. This ensures success.
SGT Dingle Berry1 votesI concur. I usually play bots for a match, maybe two or three depending on the mechanics of that champ then switch to normals until I feel confident enough to bring it into ranked. This is of course after reading up on moba/pro builds etc and usually watching YouTube on the peticular champ.
Even after all that you'll still be on a learning curve when going up against each new enemy champ, changing itemization for each enemy team comp etc.
Nameless Voice1 votesIf you want to get good at a champion, practice and theorycrafting is required.
You get good by practicing, learning how to use your abilities most effectively and learning how to play the various different matchups. It's not about finding the build paths, masteries and runes used by "the best players" and blindly copying them. It's about finding your own best build paths, masteries and runes for the specific way that you play your champion.
Certainly look what other players of your champion do, and use it as inspiration, but don't blindly copy them.
69469238DEL11 votesDid you even read my post? I said you should practice, I also said you should read up on WHY certain things(items,runes,masteries) are good on your champion so you can eliminate wasted time "theory crafting". If you understand a champions scalings and goals you'll rule out bad items.