I can't make the web page act and look like I want it to

I have tried several themes, all with a purple color choice because of our granddaughter. It was set up to guide people to where we are sending our book (yes, the heroine is a fictional version of her.) I have Page 1 which I want to have the ordering information, then I want to start a blog. I have a page 2 and a page 3, which I want to include on the new Blog page, but I don’t know how to move the data and delete the pages. I want a menu across the top that says Home and Blog, nothing else unless you think I need something. I’ve experimented with several themes but can’t seem to get it right. Could you please help?

Thanks,
Jim Whitt