you can learn solar panel installation online from the comfort of your home at https://stoplearn.com/courses/power-energy/off-grid-solar-installation-training-course-free/
Alternatively, you can enroll in the full practical sessions at Wavetra Energy Academy – http://www.wavetra.com/academy
At the end of the course, you would be able to do the following:

1. Know the principles of renewable energy
2. Understand the various types of Solar Panels: Polycrystalline, Amorphous & Monocrystalline Technologies.
3. Understand Load & Power Estimations & Calculations
4. Install Solar Panels for clients
5. Introducing Solar charge controllers
6. Understand and learn to install PWM and MPPT Solar charge controllers.
7. Understand Inverter & Solar Panel Specifications.