how do i get the bobin threaded to the top needle?

If you mean actually threading the bobbin through the needle, that doesn't happen.

If you mean how do you thread the bobbin correctly so that it catches the top thread as you sew: There is usually a diagram inside the light case on the machine that shows how to put the bobbin in correctly. If your machine doesn't have one there, you need to find it in your manual. You can order a replacement here if you need to: http://www.sewusa.com/

To check that it's threaded correctly you need to run a piece of fabric through and sew. The stitches usually will not catch each other if you don't have fabric.

What kind of machine are you using...I need a lil more info...then i can prolly help. Are you using a serger machine? I'm confused cuz my machine doesn't thread through a top needle.....you just thread the bobbin then drop it in the bobbin hole and put the thread in the lil notches...pull the thread to the back of the machine...then when you make a few sample sticthes it will bring it through the needle.

Um on the machine we used at school you:

1. turn the hand wheel toards you while holding the bobbin thread

2. pull the bobbin thread while turning

3. pull the loop you see by the feed dogs up and put the two threads through the presser foot.

You Have to lick the string first