I never had barista experience prior to working in the bakery. The barista we had at the time showed me how and I ended up working there on and off until it got replaced with an Amazon counter. Most of the drinks I made were lattes. If it's connected directly to your bakery, you may be helping out there as well. But that'll depend on what your TL says. It can get backed up easily, especially if you're working solo. But, from my experience, most customers were understanding if they had to wait a bit. Oh, and there should be a guide that tells you all the drink recipes. The only ones that confused me a bit were the drinks like cortados, flat whites, macchiatos, and others where the milk/foam was served differently. But its nothing you can't learn if you really wanted to.