add general notes section to readme

README.md

@@ -49,6 +49,12 @@ I've taken a similar approach to the software solutions mentioned above, but wit
 5. Check the "Enable", "Start In Tray", and "Start With Windows" boxes so it'll be active and just always be there.
 6. Click the "X" to close the window (the program will hide in the system tray for so long as "Start In Tray" is checked), and type happily with the program protecting you from chatter! If you need to adjust configuration, just go open the program in the tray and adjust freely. To stop the program from being in the way if you decide you don't need it anymore, just uncheck "Start In Tray" and "Start With Windows" ... once you close it after that, it will be gone until you specifically open it back up again.
 
+### General Notes
+
+- You can theoretically block any key on a keyboard that registers as a standard keypress. This includes weird special keys like a volume wheel. You might want to set volume wheels to threshold of zero if you have one. Extremely specialized keys (such as G Keys) might not be standard keypresses and thus not be blockable. If in doubt: try it and see!
+- You can block mouse buttons if you want (Left/Right/Middle/Forward/Backward). Be careful if you block left mouse button chatter: if you set the limit too high, you might become unable to double-click. If you get stuck, you can either uncheck the `Enabled` box to regain control and fix that, or, if needed, use Task Manager to kill the blocker program, and then edit the config file (see config notes below).
+- This only works in user-space. That is, the Windows login screen and other sensitive Windows protected input areas will not have chatter blocked. You might want to use a PIN or other login method to avoid chatter problems that affect a password login (see also issue #7).
+
 ### Config File Notes
 
 **If you're the type of person to care about the config file and want to edit it manually,** The config file is literally just a `config.txt` file in the same folder as the executable. Each line is one setting to apply. Prefix a line with `#` to make it a comment. All uncommented (and non-blank) lines are settings, of the form `name: value`. The following settings are available: