The Westminster Standards Database
…looks to be a very helpful resource for searching and for learning The Westminster Standards.
Especially helpful is the quiz you can take to help you memorise the Larger & Shorter Catechism. Their site will ask you a question (from your nominated starting position) and you must type in the correct answer. Punctuation isn’t important, but if you do get it wrong it allows you to compare your answer with the correct one. It’s even colour coded!
Go and visit The Westminster Standards Database.