Use the Pomodoro technique so that you can stay focused, which is 25mins studying 5min break or 50min learning and 10min break. Make sure to get up from your desk or wherever your working for your break, fresh air would be ideal. use the studyclix quizzes lol. If you know what topics are coming up look at the past papers for them because that is the way teachers will test you anyways. These tips are for every subject not just geography.
For geography, the best way to learn is flashcards, e.g. types of rocks on one side and on the other write metamorphic... (Use Quizlet if you rather than writing them out) The other way I like to learn is summarising say 5 pages of notes on a chapter to one, so then you have the key info and it is an active way of learning.