That's got to be the easiest fault ever..
You haven't said if you have a digital multimeter..If not you can buy one for $10 that will be good enough for any fault finding on your bike..
Test one..switch the multimeter to 25v DC or any dc voltage above 20 volts. measure with the red lead on the positive terminal of the battery and the black lead to the negative terminal. expect about 13v.
Test two..move the black lead to the engine block..expect the same voltage as test one..
Test three.. move the red lead to the fuse box and with the ignition switched on test all the fuses, expect the same voltage again.
Test four.. locate the 30a main fuse, somewhere near the starter solenoid and put the red lead to that, expect the same voltage again..Note that this is the probable cause..
I thought you had an intermitent failure.
If totally dead,as John stated check the batt first. go to Johns test one and two, if all is good.
the main 30 amp fuse at the starter solenoid, is most likely blown, its behind the right side cover.
the main fuse box has 4 fuses.
if the main fuse is blown, Then check for chafed, burnt and shorted wiring.
If no power at the fuse, and checking for bad grounds using voltage drop test if you are familair with that.
then go with the suggestion of testing at the ignition and so on.
it is easy to do as others have stated, just new to you perhaps.