Status
Fixed
Issue description
There should be a tile set option for blocks. I know there are tutorials, but they're too hard for me. This is how it works; make a tile set (it should tell you which parts belong to which side.), and there should be a thing where you can put it on a block. The Gui Should look like this. (check image)
I don't know what you mean by tile set? If you mean custom model, you can use one of the modeler to quite easily make one. I would suggest trying Blockbench.