how can I review and practice the words I've learned?
under the progress shows my XP and words counts that I've learned so far, but how can I find a words list to review and practice?
Unless you make up your own list I don't know of any way unless the much missed vocabulary list is reintroduced.
There is currently some A/B testing of the updated vocabulary facility, it's called Words and is a menu item on the top menu area. Some have it and some do not. I do not have it yet but some of the feedback I have seen suggests that it is better than nothing but not as good as the old vocabulary which was withdrawn several months ago.
Hopefully, this will be released to everyone soon.