If you want to instantly jump to desired folder while you've already known the exact url, you can do like this :

1. Open your Finder Window (of course you have to)
2. Press down G and you will see url bar appear before your eyes.
   

   

3. Then type in your destination folder. Let's say you want to go to your Applications folder. Type in /Applications and hit will bring you there.
4. There is also a auto-complete feature. When you want to go to Applications folder, you don't need to type in all, just type /App and hit down , it will appear as /Applications/
   

   

5. Note that ~/ is the same as your Home directory and pressing will close the url bar.