Look at the top right corner of your screen, and make sure you're in the Library module.
We've already looked at two of the panels, the Navigator panel and the Histogram panel.
Before covering the others, let's learn how to manage the panels.
Press the Tab key to make all of the panels disappear on the left and right sides.
Now, you've got more space in the work area in the middle of your screen.
To restore the panels, press Tab again.
Look for the triangles on the far left and far right sides of Lightroom.
Click the triangle to hide the panels on the left or right side.
Because the triangles are near the scroll bars, you may inadvertently hide the panels when scrolling.
Click the header of a panel to close it.
Click the panel header again to open the panel.
By default, all of the panels are open.
To move from panel-to-panel, you have to scroll.
If you don't want to scroll, you can set the panels so that only one is open at a time.
Press and hold Alt (Windows) or Option (Mac), and click on the gray triangle or header of the panel.
The panels at the top, Navigator and Histogram, remain open, all of the time, unless you close them.
Next, we'll look at the tools in the panels in more detail.