Start with getting used to running. If you’re in shape, you ccan run right away; run/walk method if you can’t hadle it. Train 3-4 times a week for first 2-3 week. Increase mileage at the beginning.
When you can consistently for 20 minutes (aprox. week 4), you can implement speed work. Strides, intervals, fartlek. Increase explosive power doing jump lunges, box jumping, and core exercises. Run against the wall is also very helpful.
There’s a lot of exercises and progmrams you can choose from, but they all require consistancy. So make sure to follow rotine and don’t break the schedule, that’s my biggest advice