Help with how to pick teams for battle
Look at @Lexxtarc post. I think he said it best. As a new player, focus on building from the bottom up. Buildup a base of 3* heros that you can compete with. This will help you to get materials to then focus on building up a solid set of 4* heros to battle with. That will help you to get what you need to start build 5* heros. IMO