Sporty,
Took my Ielts General Test last December. Got 8.5 overall so not bad. Bought the Ielts plus 2 book recommended by the test centre. Well worth the preparation as I did all the tests in the book twice. They were harder than the actual general test so worth the effort. The Academic test is a lot harder.
From memory I started with the listening test, then reading test which I finished early at this point its worth going to use the loo. Then the writing test which I just about finished. There was a short break between each. Break for lunch then the speaking test in the afternoon which involved a lot of waiting. The order may differ between test centres. Make sure you keep to the timetables given, although the test centres are well versed in this sort of thing. You would have to try to miss an exam. Good luck.
Ploppy.