I'd like to move the navigation tabs-- maybe under the header. I'd also like to be able to change their font, the tab color and do a hover color.

This isn't my site, but it has the general idea of what I'm trying to do:
http://www.cookinghow.com/

I'm new to WP so I'd appreciate if you could keep any answers simple. Thank you!

go to ago->Style & edit HEADER AREA->Configure Header Area and read the directions

Thanks, I appreciate the help. I was looking in the wrong place.

Can you tell me how to remove the dotted line that encases the menu at the ends?

I should say that before asking that question about the dashed lines I looked through tons of posts on here for this solution. I also Googled it, watched several youtube videos, etc....

what is the URL?
did you look at the menu options?

Yes, I checked all the menu options. Nothing is set to "dashed." I tried changing the "Border around all menu items" from solid to dashed to see what that affected. It changed the border around each tab to dashed. (I'm sure you knew that)

The URL is http://garudaaviary.org/
Atahualpa 3.6.7

I'm not a web designer--just a volunteer with this non-profit. We had to get this site up quickly to make it functional even though it looks awful, and normally people would never make a site public in this condition. That is my "Please excuse this messy house" disclaimer.

I appreciate your help.

The centered menu does work a bit differently than the left aligned one. To remove those dashes add the following to ATO>Add HTML/CSS Inserts>CSS Inserts.

#menu1 {
    border: 1px solid #fff !important;
}

Cool, that did it! And now I have a better idea of how that Add HTML/CSS inserts area works. Very handy.

Thanks so much.