You don’t need a dictionary (at the beginning).
Just like a wise traveler, any good language student will take stock of what they need to succeed in their studies. This is usually done at the beginning prior to enrolling for the class. At some point, every language student will have to use a dictionary in their studies. From experience, I’d like to point out that a dictionary isn’t really necessary at the beginning, and this is why. You see, at the beginners level, one is just laying a foundation. This is where someone starts learning from the alphabet level, getting to understand the mechanics of the language. At this point, the emphasis isn’t on vocabulary. This is the time to learn about the language structure, conjugations (past, present, future) etc. Now, this may sound strange, telling a prospective languag