Welcome to the Babble!
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You might try this. With Genesis you will find when you go to your dashboard a "Genesis" button in the left column. Click on that and then go to the bottom of the themes page. You will find a "Reset Settings" button there. I would try starting there. It is possible that you have inadvertently chosen to use a page instead of your blogs for the first page (you could check that first if you want) or some other setting that is messing you up. I have often found myself searching for hours trying to find some simple issue as it turns out. One of the frustrating aspects of this work.
Glad to have you join the forum, a great place to learn and share.