Ds is a graduate of the summer potty training thread.
He was 2.7 at the time and did great, was out of nappies of a day time within a week and of a nightime within a fortnight.
You've got to be determined though, no changing your mind when they poo in your plants or something.
Top tip - buy packs of mega cheap pants instead of pull ups. Asda do packs of 10 for £3.