Welcome to Glider parenthood. for future reference, if you post questions under the 'Sugar Glider' section of the forum you will have more folks see your posts and respond.
There is a section called the Gliderpedia that will give you lots of tips on bonding.
To start off, some gliders warm up more quickly than others. Some just take lots of patience. Gliders are very scent oriented. Cut a few pieces of fleece in small squares and either tuck them into your clothes for a day or sleep with them in your pillow case to get YOUR scent on them. Then put these in your glider's sleeping pouch to help him get used to your scent.
When you approach his cage, talk to him quietly. Always talk to him before you open the cage door or before you touch his pouch. Offer a treat when you reach toward his pouch. You can drop a treat in and let him enjoy it in the safety of his pouch at first. Soon he will associate you talking to him with treats and begin to pop out of the pouch to get them or even come to the side of the cage when he hears your voice for a yummy treat.
During the day, let your glider get several hours of undisturbed sleep before trying to handle or interact with him. Wait until the afternoon hours to carry him around. He will be friendlier if he has had some solid sleep rather than being disturbed frequently all morning long. I am NOT friendly when someone wakes me up repeatedly all night long. (ask my little dogs about that one)
As for feeding him, there are many time tested recipes for glider staple mixtures that will meet your glider's needs for protein, vitamins and minerals especially calcium. These are fed with a wide variety of fruits and vegetables each night (except the BML feeding plan that allows only a few fruit choices and uses frozen mixed vegetables only). I have links to the information on these feeding plans on my web page to help you choose one that will work for you and your glider.
http://www.gliderkids.com/contact.html
look over the feeding plans and then you can ask specific questions about the ones you would like feed your glider. Once you decide on a feeding plan you can purchase the specific ingredients and supplements to make it.
feel free to ask questions, we are here to help you learn to care for your little friend.
Candy & the GliderKids
http://www.gliderkids.com/about.html