Return to MTG, Noob Progression Road-map?

Hello magicTCG,

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First, I'll start with a quick backstory. I just recently started playing MTG again, I haven't played since Lorwyn. I know how to play, but I really never got into it too much.

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Now I really want to get into it and really learn how to play the game, create decks and compete. I already started going to Drafts at my LGS and playing Arena.

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I was wondering if there's a sort of Road-map or Progression guide to follow to get to the point to play competitively?

Something of the likes of:

1. Learn mechanics of MTG
2. Learn Mana Curve and Basic Deck Building
3. Learn how to identify good cards in Draft

etc...

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I also would like to know which path to take. Which formats to play. Standard, Modern and Legacy OR Constructed OR Commander OR just MTGA?

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Any input would be greatly appreciated.