Useful Klingon Memrise courses
I am so happy that Klingon is finally available to learn! I have found two Memrise courses that might help you out:
Complete Klingon Vocabulary: https://www.memrise.com/course/93241/complete-klingon-vocabulary/
Basics of Klingon Grammar: https://www.memrise.com/course/93771/basics-of-klingon-grammar/
I wish you Qapla' with your Klingon studies!
I have not used these myself, but when these courses were created, they had a lot of errors. They have been taken over by a talented Klingon speaker and corrections are being made. Basics of Klingon Grammar has been improved, but is not very complete. A lot of errors still exist in Complete Klingon Vocabulary and it should probably be avoided unless you are confident you can spot and adjust for the errors.