You can use z, then. You don’t have to bookmark directories to jump to them.
Anyways z always changes directory. Using bd within backticks will just print the path without changing the directory. We can use that with other commands like ls, zip etc. Example: "ls `bd <starting letters>`" would only print the contents without changing the directory.
In addition to "z foldername" to move around, you can do things like "v vimrc" or "v freetds.conf" to directly edit files, where ever you are.
It's available on homebrew.