Need some advice on solar panels, where best to ask ? ?

Depends what sort of advice you're looking for and how the solar panels will be used.

There is a big difference between the solar panels on a house that are grid-tied and solar panels used on an RV to charge batteries or a portable solar generator... or some other solar panel (used for charging small toys or other low-power/low voltage devices).

Solar panels by themselves are useless. You need an inverter and batteries in order to use it for home power. Lithium ion batteries wear out, and lithium mines destroy the environment.