I have posted the second tutorial in my 3D tile engine tutorial. This tutorial moves everything to a library and adds a customer shader instead of using a basic effect. I also update the tile set so that it is a power of two so it can be loaded onto the graphics card. You can find the tutorial on the MonoGame Tutorials page of the web site or use this direct link.
I’m also working on the third tutorial in my web programming series Dragon’s Claw. I hope to have it finished tonight or tomorrow. Keep checking back for more details.