This was probably the most frustrating thing for me to figure out when I first started my blog. It's actually really easy. So without further ado –
In your Blogger Dashboard go to the Overview Screen and click on the “Pages” link on the left side of the screen.
Your Pages Screen should now be up. Click the “New Page” button. IMPORTANT: Don't click the little "Compose/pencil" button at the top of the screen; this will create a "Post" not a "Page."
The screen for creating a Page looks a lot like the screen for creating a Post. IMPORTANT: Give the Page the title that you want to see as a Tab in your menu bar. When you are finished writing up the body of the Page, hit “Publish.”
You should now be back at the Pages Screen and your new Page should be listed. Now click the “Layout” link on the left side of the screen.
Now you should see the screen for your blog layout. Click the “Add a Gadget” in the horizontal space below the Header.
A Gadget menu will pop up. Scroll down until you see the option for “Pages” and then click on the plus sign.
A Configure Page List will pop up. You should see a list of the Page/s you created earlier. Check all that you want to have shown as Tabs in your menu bar. NOTE: I leave the title blank because I don’t think a menu bar really needs a title. Click “Save.”
After you click save you will see your Layout screen again. You will now see a horizontal “Pages” box where the “Add a Gadget” box used to be. IMPORTANT: At this point make sure that you click the “Save Arrangement” button! I have forgotten this step before and lost a lot of work, yikes!
View your blog and see your beautiful new Menu Bar!!!!!
I hope you enjoyed this tutorial! If you are still stuck or if you have any other tech questions, please let me know!