[Bruce Edwards]

Sounds like the clutch is not letting go. Try to adjust the free play. You may have to much.
Will it go in to gear ok if you shut the car off? Pull up to a stop and see if it will shift . If it does not shut the engine off and try again. If it slips in and you can start the car with out the brake on does it try to move forward? If so the clutch is to tight.