There are so many little things like this that it can help being in the novice network to ask these questions. You can ask anyone with a crown to invite you to it if you are not in there. You can also join a free company that is aimed at new players.

Don't worry about being confused about these things. Most new players are confused by the same things so we are very used to it. When a sprout dies it's normal and expected and we just res them. Confusion about /return is normal too in that dungeon.