I'm not an expert, but probably the simplest way to learn the French would be:
Against 3.Nc3 and 3.Nd2, play dxe4 and get a playable position without much to learn.
The exchange variation poses very little threat, im pretty sure there are tons of setups you could learn.
In the advance variation, you might need to learn some theory but just put pressure on white's center.
french poison pawn is a very interesting gameplay.