My advice would be to let him get use to his new surroundings for a few weeks. Handling him may be difficult at first but using treats like wheat squares may be helpful to get him use to you.
No more than one or two treats per day.. they have sensitive little systems.
Have plenty of timothy/alfalfa hay available.
Lots of playtime is always fun and better if your chin is living alone.
Have lots of ledges and a wheel in the cage (not a wire one).. cuz they like to jump and run ALOT
Chew toys are a must to keep their teeth down.
Thats all I can think of right now.. Good luck with your new chinnie!