Need help with electrical problem

You cannot really check a coil, only replace it. You can get an idea with resistance readings. Check the resistance between coil + and coil-. They should be very low. If you don't have a very good multimeter, with a low resistance scale, this won't tell you much

Check between the coil tower and either coil+ or coil-. Should be many K ohms. This reading will depend on the particular coil. What as exact as possible are you running for a coil, AKA OEM stock, Blaster II or what?