Honestly practice does make perfect, I didn't really start getting the hang of the register and everything like that till a couple months in. As for the drinks, it helps that a lot of the drinks have the same process, just different flavors. For example: Lattes and mochas are basically made the same exact way, the only difference is the flavoring put in the bottom. Same with fraps and the refreshers. All you really need to remember is how many pumps/shots go into which sizes and everything else will get easier.

As for customers, the best thing would be just to let them know you are still learning since you're new so you might be a tad slow and ask for their patience. The best way to connect is to just show you are human just like them

I also work at a licensed store in a local grocery chain. How many people typically work with you at yours? My kiosk is due for a remodel and we typically have two baristas at a time per shift unless we are training. I am the main trainer and have trained every person who works with me including my manager (lol). I would suggest asking your coworkers to work on drinks with you while there is a lull. Reading the drink recipe cards may also help you while you can’t be on bar. I would probably suggest to ask if you could be on bar more especially when it is a slower time of day so you don’t get overwhelmed. When I’m training I typically have people shadow me and start trying things like steaming milk, pulling shots and doing the shaken iced drinks to start because that’s the easiest to learn. Frappuccino stuff is typically the last thing I teach people due to the labor that’s involved. My kiosk is set up in a way where the cold bar is a 360 endeavor because of the location of our pumps. I guess I would just say to try to communicate with whoever is with you that you feel like you should have more training with the drink making and have register down already! Good luck!

There's about 30 hours of training for new hires that gives you the basics of how to do each role: POS, bar, and CS. Training is just enough to get you started, it's not intended to make you great. In my store most new hires get stuck on POS a lot. Once we see that they get the hang of that, and they can make good customer connections there we start giving them more bar time or CS time. Being on POS helps with drinks because the right side of the screen also has the recipe for the drinks, so you can learn that while your on POS.