Potty training/big boy beds?

Lili β€’ Twin mama ~21~ Married πŸ’

When should I introduce the potty to my twins? They are boys and they are now 15 months. I don't expect them to actually start potty training for a while, but I want them to get used to it and know what it is for. Is that a good idea? And what age would be a good age to do this?

Same with toddler beds. They're showing interest in trying to escape their beds already at 15 months πŸ˜… they try to climb over the side. I want them to get used to the idea of a big boy bed, but don't know when I should introduce that?

Not both at once, obviously, but I want to know what a good time for those two things would be.