It is pretty difficult right now to bet on any sports due to the corona virus and the implications it has on the football leagues. Not just European football has been affected, almost all leagues in the U.S. have also followed suit by canceling or delaying (minimum) for the time being.
With any sports betting, I suggest following a club or team and learning as much as you can. One way of doing this is to place a small bet amount on a match (enough to where you care but can lose) and learning that way. In my experience, this is what works the best.