None of his personal failures leak through into his books. It's not like reading someone who injects their abhorrent philosophy or ideology into their book and you're worried it will rub off on you. Imagine if you found out tomorrow that the author of your favorite book ever was an awful person - I don't see why that would change how you feel about the book.

Anyway - yes there is a ton of content out there, more than enough for 100 lifetimes. If you have two hours and eighteen minutes the movie Master And Command: Far Side of the World does the source material good justice and is an excellent film in its own right. It's quite true to the books so it is probably a good predictor of whether you'd enjoy the books.