Automatically mount partitions in Linux Lite

[Moltke]

So, I installed Linux Lite, I already set up the partitions, but I can't figure how to mount them.

How did you install Linux Lite? Did you choose the defaults or something else? Usually, the defaults work fine and there should be no problems. Is this a dual-boot setup? Is/are there any other Linux OS(es) in your pc? Click on Menu and type gparted once it shows click on it, type your password when asked, take a screenshot and post it here so we can take a better look at your setup in order to provide better informed advice/suggestions.