First off we see you, can back off the huge font.
If the clutch is still off the bike, make sure the plates and what not are not all stuck together. If it is put together then you need to adjust the clutch correctly.
Start at the handle and loosen the adjustment there completely. Then move down to the sprocket cover and loosen that adjustment completely. Now, take a 12 MM and flat head screw driver and loosen the nut on the side of the cover. NOW turn the SCREW COUNTER CLOCKWISE until you feel it just touch something. THEN turn it CLOCK WISE about a quarter turn and LOCK the nut in. Go back to the cable adjustment at the top of the sprocket cover and adjust it tight until you have about a 1/2" of play AT THE HANDLE. Use the handle adjustment only for fine tuning, all major adjustment should be made at the cover.
NOW with the bike off, pull the handle. You should feel clutch disengage, and if the bike is in gear on the floor you should be able to push it. Mine is sorta resistive IF its not running but if it is its fine. IF that all works you are done with that for now.
IF after all that, it still won't work, I would pull the sprocket cover and inspect the mechanism. Make sure the cable hasn't popped out or the arm hasn't gone over center. Also, make sure the ball bearing is in its place or it will never work correctly.