Good day

I bought a house and i don't where to start. I need to all my electrical applience use the solar enegry. how much does solar enegry cost? is there any danger using it? my house got 3 bedroom, 1 toilet, 1 seating room and a small kichen. Is there any drawing that will samplify the function of solar sytem. I only saw solar gysar. I don't even whether the sytem exit.