Hi there. Yes this is a PC only server (for now). To join you need a Java Edition Minecraft account which you can buy from here https://www.minecraft.net/en-us/
After downloading and installing Minecraft, you can join the server by going to "Multiplayer" and clicking "Add Server" and adding our IP theblockville.com, after which you will see our server added to your list. Once you see it, just double click it to join the server and get to experience one of the best communities in Minecraft!