What does 'nothing' mean?

lock tire up skiding to a stop?

engine turning but no joy?

lock tire up skiding to a stop is the most common answer.
You have to do 1 of 2 things to get the tire rolling.
1. make sure the piston is on the exhast stroke.
How the f@#k do I do that you say?
pretty darn simple, put it in the big gear and bump it forward till you can easily lift up on the decomp lever.  Now you are on the exhaust stroke.
2. push the start button right before you release the clutch.
You need to use a little juice on this one, so the battery will need to recover before it'll start.  So it will chug a couple of times before you get fire.

Now I select 1st, most will say 2nd or 3rd.  #2 is why I select 1st cause it will easily chug along in 1st till it fires so you don't have pull in the clutch with any precision to keep it from lugging.

May have been turning to slow to fire, try lower gear as you said.

Get a decent battery in it,

update
Did this to make sure I could do it when needed (not out of neccessity).
Tried in second gear and definately used a little more speed. Worked fine even w/o hitting the starter button.
hopefully when I find the need to do this I'll be at the top of a big hill instead of at the bottom...