If you've never been to Disneyland Resort; here's a very simple map to give you an idea of the place's layout. As you can see, the resort is very compact and easy to get around. If you're staying on property and don't intend to leave DL Resort during your vacation, you won't need any transportation except to get to and from the airport.
The monorail station is located in Downtown Disney on the Disneyland Hotel side of Disneyland Drive. The monorail makes only one other stop: Disneyland's Tomorrowland.