Since so much is new you are likely to find a few mis-wired connections. Armed with a multimeter, a wiring diagram, and this message board I know you'll work through all the problems.
For the charge warning light start as Minimans said by making sure the bulb works. Once you know the light is good, trace the wiring. The charge warning light starts with a white wire leaving the ignition switch. The white wire should have zero volts on it when the key is off and the white wire should have battery voltage on it when the key is on. The white wire goes to the socket for the charge warning lamp. A second wire (small brown/yellow) leaves the warning lamp socket and goes to the small terminal on the alternator plug.
Once you know the bulb is working you can use the multimeter to make sure you have voltage at the alternator end of the brown/yellow wire with the key in the run position. If you don't have a multimeter, you can turn the ignition switch to "run" and ground the brown/yellow wire in the alternator plug. That should cause the warning light to turn on.