The way to do it is to select the text you want surrounded (SHIFT + LEFT/RIGHT etc) and then press the opening bracket key. There are other tricks to this as well. If I press " it automatically gives me "" and places the cursor inside. I can then either press CMD+Return to drop me straight to the next line or CMD+left (CTRL-e) to jump to the end.

As for moving around, I just use shortcuts such as ALT+left/right or CMD+left/right (CTRL+a/e).