I am an alright constructed player, but I am terrible at Arena. I am looking to freshen things up by learning how to play Arena and what to expect. Generally if I can get 5 wins, I will take it. So for now that is my goal.

When it comes to Arena, what is my focus in terms of playstyle and deckbuilding? Do I build value? Do I build aggressively? I do build around what I pick in terms of cards? What cards do I choose first and last?

Pretty much a run down of the ins and outs of it would help me a lot.

get arenatracker
it shows you which of the pick has the highest winrate.

Depends on class, and usually your first 8-12 selections (which should be usually 95% of the time picked on card strength). After that you want to focus a little on synergy as well as your curve depending on if ur first 30% of the draft has been agro midrange or control