Board Game Arena

Is there a way to play solo against an AI? I could learn new games before trying with others.

There are currently 69 games you can play in solo mode. To find them, go to "Games" and filter for "number of players = 1" as this: https://boardgamearena.com/gamelist?players=1

Here is another thread with some more tips for you: https://boardgamearena.com/forum/viewtopic.php?t=26463

Solo mode is not against an AI, but a special game-specific mode, where you play either to try to get highest score with some particular rules or agains some kind of "ghost" opponent who follows some pre-defined (sometimes random) actions. It's also available for some games only.

If you are premium, you can play against yourself in hotseat mode.