Information and advice about breeding , buying, and taming sugar gliders?

I am looking to get 2 breeding sugar gliders as i had some before and i loved them, but unfortunately my mum had to sell them as my dad is in the army and when he goes to away for 6 months my mum wants to go to see our family for comfort and we couldn't keep leaving them and relying on friends to care for them. now im older i want to get some and to breed them, i cant find many breeding couples for sale in uk and i would like some advise on taming them as i only had them at a young age and cant remember much. Also if you have 2 can you tell the difference between them? and are they okay with cats? Thanks