Once in a while I will post tutorials here for my students to follow. You know, sometimes you are just dreamy in class and have no idea what the instructor is showing upfront. Or maybe you have personal problems. It’s okay,  I got you bro and sis!. Read this here, you may still finish your AR assignments and final year projects and masters whatever.

This tutorial is easy enough for public too. So help yourself to some knowledge. You may learn as much you want. I have arranged them into categories