Potty training!

It has been hell trying to change my son’s diaper lately, he absolutely hates it. He was also showing a few signs of being ready for the potty. So we have officially begun potty training. He will pee in the potty most times when i take him every 15/20 minutes, but he will still have accidents in his underwear before or after i take him sometimes.

Does anyone have any tips for me?