I see a lot of topics about how to make a mod, but nothing about how to use one. I have no mod folder and the help I saw was for different game. How do I add a mod to my game? I just need plain, simple instructions, as I'm not really smart when it comes to some computer terminology.
Here are the instructions for installing SMAPI and being able to use mods. Follow that first and come back if you have more questions about the installation process. There are also instructions on how to install mods themselves on that site too, as well as help on how to find your mods folder if you need it.