just a hint.. I wish I would of know this when i first got started... you can use ".." to go back a directory as many times as you need...
For instance you are in /usr/local/share/apps/SomeApp and you want to cd from there to /usr/local/bin
you can do this
it takes you down two directoires then back up to bin
once again.. just sharing because this was something I wish I knew when i first started using linux.