Using outlets without Generator?

[Hardtrigger]

Hello again and a little embarrased to asked this but can someone on this fine forum explain to me how I can use the interior outlets without turning the generator on when parked? I have no juice coming from the outlets unless the generator is on! I hate to run the generator for just having to power for my laptop computer. I know this is a rookie question but I cant figure it out and my manuels dont cover the question. Thank you in advance! Oh and Oregon coast is producing a trillion pounds of blackberries right of the road and right off the vines everywhere! Now, how do I make a living picking and selling blackberries so as I don't have to return to the corporate world that I know I must face with monies slowly fading away! That I guess is my million dollar question please??? Thanks again, Robert P.S everyone on this forum is out of sight for all the help and knowledge for all that is shared!!!!!!