What are some other sources I can use to expand my french vocab?
Read a book, and look up every word you don't know. I'm reading Le Petit Prince, and defining every word I don't know in the margins. That way, you have context for the words, and you can practice French!
Personally I really liked the 6000 words app. Helped me build my vocab a lot when I was learning French.
Thank you very much for this suggestion. It goes someway to replacing the old flashcards, which were removed from the Words section. I spent a few fruitful hours looking at the 6000 words app yesterday.