Echoing some of the above...
Trust me - you don't have time for just one, so get a pair if you get any. They need a
large bird cage or ferret cage to live in, they also need pouches, toys, and (ideally) a wodent wheel w/ trim-track installed to keep their nails from getting too sharp.
We've had a pair for over a year now. We feed them using all 4 cups that came w/ the large cage... 1) water/Gatorade 1:1 2) babyfood fruit or veggies (carefully chosen from a short list on the basis of their Ca/P ratios - Calcium is good, Phosphorus can cause problems), 3) Meat Sticks (also in the babyfood aisle) 4) ZooKeeper's Secret or Sun Coast glider pellets. All food gets replaced each evening. Extruded pine bedding gets replaced weekly. They also enjoy occasional "Bugs & Berries" but this product has been tough to find lately.
Our gliders are rarely seen. They stay in their pouch until you feed them and even then they won't come out sometimes unless it's dark in their room. They tolerate being held and messed with but they really don't seem to enjoy it a lot despite our efforts to bond with them. You're supposed to bond w/ them by wearing a bonding pouch around your neck for hours on end (usually, they sleep while you do this though one of ours really likes checking out the flowers at the nursery). They will not hesitate to run from you, bite you (doesn't hurt, hamsters can do far more damage) or eliminate on you. All I do anymore is lift their pouch out of the cage and pet them some when I feed them (which is well under half the time as they belong to my daughters).
Trimmed glider nails are about as sharp as cat claws. Untrimmed ones are needle sharp. Plan on having lots of little red prick marks all over your arms until your immune system becomes accustomed to the gliders.
At night, they bounce all over the cage, run in the wheel, bark (sometimes - if they really go at it for long, usually flicking the lights in their room a couple of times will stop them). They're cute and all, but I'd readily rate a hamster or guinea pig as being a better pet (and a lot cheaper).
Also - we too have a min. daschund cross - she wants the gliders WAY more than she wants to get at our birds.
Here's a good starting point for reading...
http://www.sugar-gliders.com/sugar-glider-diet.htm