Finally buying a strong inverter. How many batteries to buy?

ADVICE,

Cheryl,
The only answer that makes sense, is self education. Self education differs utterly from exposing one's self to a barrage of opinions.

The answer lies in learning from OFF-GRID, alternative energy papers, discussions and forums.

Start out easy. Here is an online recommendation introduction that is free. It makes perfect sense.

http://www.motherearthnews.com/homesteading-and-livestock/living-off-grid-how-to-calculate-the-size-of-your-electrical-system