I don't understand social casinos at all because I've only played in regular ones before. Could someone please explain the general concept of social casinos? I would be very grateful.

What regular casino did you play in before? I played at a regular casino for about two years until I saw an ad for this social casino, Real American Games: https://realamericangames.com/ . It said that you could play without making an initial deposit, which got me interested. You use virtual coins to play slots, which you can receive as a welcome bonus, for daily casino logins, or for other activities. If you have any other questions, feel free to message me privately, and I will answer them.