So, ....
I suppose you have no experience riding motorcycle at all, this really is your first time experience with motorcycle, correct?
Let's start from the beginning.
yesterday I was trying my bike around our compound started off course with neutral then first gear then up to second gear....I didn't mixed well the clutch and the gas that made the bike turned off.
So, you stalled while in 2nd gear, correct?
Did you drop the bike? Or stay upright?
afterwards the bike wouldn't start anymore.....
In a situation like this, check kill switch first. Make sure it's in "run" position.
I tried to put it back to neutral and I was able to but the Neutral green light on the dashboard would not come back.
Your bike may just be in false neutral.
Use your hand(not your left foot as you'd do while riding), push down the gear shift lever.
You will hear the "clonk" when it goes into the gear. (You can also "feel" it.)
Without pulling the clutch lever, push the bike forward till it stops.
Push down the shift lever again.
Repeat it until it won't go any further down.
Now, you are in 1st gear.
Use the hand again (not the foot), pull up the shift lever.
Try if you can move the bike forward or backward (without pulling the clutch lever in), for more than one rotation of the tire.
Turn on the key and see if the neutral light is on.