Why doesn't DIR show C:\Users\Yours Truly\AppData?

It's marked as hidden. You can view it if you do dir /ah "C:\Users\Yours Truly"... or dir /ad "C:\Users\Yours Truly". (ah = all hidden files, ad = all directories including hidden)

Another quick shortcut to get there is: use

CD %appdata%\..

%appdata% is an environment variable that defaults to your current appdata folder. In Windows, this can be roaming, local, or localnew. Almost everything uses C:\Users\Yours Truly\AppData\Roaming... so in most cases it's probably better just to use the %appdata% variable instead of the parent directory of %appdata%.