The following documents have instructions on how to use that particular calculator. If you would like to use your calculator to find things like the mean, standard deviation and more (that we haven’t yet learned) you can look at your user manual!
These were the ones I found (I might have more and will look for them). If you don’t see your type of calculator, ask me and I’ll try to find it!
TI-83 (the TI-84 works similarly)