Get back where they were
can someone help me here, I accidentally click on something and got it like that, how can I go back? And how can I get "Product Tab" back after i accidentaly deleted them for trying to get it back where they were. I can't even do the project without it. It is frustrating and confusing.

Comments
Open the Window tab at the top (see attachment).
Then "workspace" > "select layout"
Pick the one you like, and open it. You can change or personalize them the way you like. Experiment with them...then save it . Pick a new name. Any time you need to restore a workspace, you can go back in and load up one of the default workspaces, or one of your saved workspaces.
Also, there are small handles (see attachment) that I often bump. Windows and panels close and can be tough to get back if you don't know about them. They are easy to miss. Click to close; click again to restore.
Hope this helps.