Start slow and wear your first cage for short periods until you're comfortable and can wear it longer. If there's chaffing or any pain... Remove it.
Also... Getting it on is an art form. You can Google easy ways to do it... But my preferred method is to cut off the top of an old stocking or thigh high. Then place the stocking thru the cage with the opening towards your cock. Then place your cock in the stocking and starting into the chastity cage. Then pull the stocking out of the front opening of the cage, thereby bringing your cock fully inside.
Enjoy the tease and denial and welcome to the world of chastity Cuckolds sweety! 😘💕💞