You are expected to familiarize yourself with the equipment at the start of the semester. Other students or the lab assistants. Keep in mind that they are students also, so you shouldn't rely on them to solve all of your problems. If you do not crash at least once a day, you aren't working hard enough. If you are using an unfamiliar piece of software, try everything.
Experimentation is the best way to learn.
If all else fails, you may actually have to read something. If the computer crashes, you will have to restart the computer manually. This means that any unsaved work you have will be lost. To restart, hold down the control and Apple keys simultaneously and press the power key. There are many printers in the lab, you must first tell the computer which printer you want to print to.