How do you thread a bottom bobbin on an Atland YM-260A-7 sewing machine?

If I'm not mistaken, all sewing machines have the same 'basic' structure so this means that if you just put the bobbin in the bobbin case in the bottom of the machine, hold about 5 inches of the thread out then dangle it over the back (away from you). Next hold about 10 inches of the top thread, that's been threaded through the needle, and with the other hand turn the wheel counter clockwise, (or clockwise, I think this varies per machine). The point is to allow the top thread to loop around the bottom one, and it should do that automatically. All you have to do is just turn the wheel until the needle dips down all the way and back up all the way. After this point you can do a couple of test stitches and if it hasn't picked up try it again, but it should!

Good luck.