Here's a rules primer video of this monster game. Yes, I know my camera sucks at focusing on cards. Yes, I know I need to stop waving the camera around. Yes, I know I say "Um" too much. Hopefully you can look past all that and still find the videos helpful...
Solid set of videos ! Even if you did miss the third Shadow Stronghold (Mt. Gundabad up north ) .
One mention regarding part three which can make a difference. When you take damage, you can discard either from Life Pool without seeing the card OR from your hand, knowing what you're getting rid of. Helps if you have a big hand and a few chaff cards that will neither help you in this combat or enable movement this or next turn.
! Even if you did miss the third Shadow Stronghold (Mt. Gundabad up north 
) .