Bobbin trouble?

I recently bought a wonderful Singer Touch and Sew Special Zig-Zag Sewing Machine Model 626. It came complete in a cabinet with drawers and all of the parts, including book, oil, everything. It only cost me 30 dollars.
I am having trouble with the bobbin. It seems that the needle won't pick up the bobbin thread. Can I be doing something incorrectly or do you think that it is not working correctly?
Please help me as I am ready to sew blankets for my new grandchild.
Thank you in advance. I worked to fix it for 2 days now. Actually feel like pulling my hair out. lol.

Sincerely
Dilana