I'd recommend reading a study book about the play, or a site like this that's meant for kids learning at school: https://www.bbc.co.uk/bitesize/topics/z3wyk7h and then find a recording of the play and watch it. If you want to delve more into the language you can read it after, but the plays are much better performed than read, imo.

And don't delay getting into King Lear, it's so good!