Concentrate on the most useful tenses (présent, imparfait, passé composé) get used to using them in context. Then once you've mastered them, move on to the rest. As with any new language, practice makes perfect. There are many liaisons, elisions, and modern glidings used with French verbs, and the written form may mislead you into using the wrong pronunciation If you don't have a study partner to practice with, an audio guide is the next best thing. You'll learn how to conjugate verbs properly and pronounce them correctly.