It will be very helpful to establish a routine for changing your pouch. If you are wearing a drainable pouch, you will typically change your pouching system once or twice a week. If you choose to wear a closed-end pouch, you will change each time your stoma has been active.
Output from a colostomy is not too different from a normal bowel movements. The output is generally solid, and you may need to empty after each bowel movement.

Is changing or emptying the pouch difficult?
The first few times, it may seem difficult but it will get easier.
Take your time, it may take a few times before you get it right. Eventually, changing and emptying your pouch will become routine for you.
Before use, always consult the 'Instructions for use' document provided with the product