At the top of the Lightroom screen in the middle, is there a little triangle pointing downward? If there is then click on that to reveal the menu bar you are looking for. You can also go to the Windows menu and choose the different modules.
Thanks Jim. I looked at every part of the screen but that . It's fixed now. This is my major fault with Adobe. The symbols are to small and not bright enough. Maybe one day they will correct this. Some of use aren't young with sharp eyes.
That has been a standard feature for as long as I remember. Something that you really shouldn't overlook if you have used the Lightroom interface for very long. I don't see any reason to correct this. Just get used to using Lightroom..
You should familiarize yourself with the keyboard shortcuts in Lightroom.
Press F5 to show/hide the module picker, F6 for the film strip, F7 for the left side panel, F8 for the right side panel, pressing Tab will show/hide both side panels. You can also press G for Library and D for Develop.
You can also see a list of keyboard shortcuts for the current module by pressing Ctr+/ (Cmd+/ on a Mac)
This list is also available from the Help menu.