Apparently at some point in an earlier install/preferences, I managed to get my Blender to use the right mouse button to choose things. How do I get it changed back?
Never mind - I just read the last question about loading the Factory Defaults and that fixed it for me.
On the other hand, now my space bar wants to be the Play Animation instead of Search. *sigh*
Hi James! To change the spacebar back to your preferred action choose Edit> Preferences> Keymap> Spacebar Action
You can also use F3 as the search key which can be more convenient if you end up working on projects where you need the Play button easily accessible (simulations, animation).
I'm pretty sure when you open Blender for the first time (or a new version of it), it asks for a quick setup of preferences. Right click to select is one of those options. That may have been when you changed it! You'll also find it in the keymap page that Coyo mentioned above.