@FarRock is a great commenter when it comes to ingame strategy and tips as micromanaging etc.
However, when the game comes back, I think one of the best things he can do is finish the "deck building tutorial" series he started, where he explained counters and card values and uses very well.
I used to watch FarRock all the time, through him I even found this project (in "suggested" channels on the side of his channels - and man am I happy for that )
However, when it comes to deck building, I prefer my own method - test and try, fail, fix, repeat. Takes time, but with every mistake, you learn a bit and that pushes you towards the final deck, that may look very familiar to existing meta ones, but the thing is you found out yourself. Everyone has a different playstyle and cards who some may deem useless fit perfectly into a different kind of strategy, and lets face it, BattleForge for me was the best strategy I have yet played (and probably will ever play) because of the infinite numbers of ways I can play and use non-meta cards for my advantage.