1. Dual probe thermo
As stated get the MAvrick et732 from Amazon
2. Smoking wood, where to get it and what kinds
That is going to depend where you are but if you have a do it best in the area order site to store for great prices. 10lb for $9 http://www.doitbest.com/search-smoker+wood.dib
3. Covers for uds and akorn (I'm in Chicago area)
For the UDS just get a Weber Kettle Cover, I thought the Akorn came with one. If not Amazon should have both.
4. Charcoal or lump
Start with something simple, get some plowboys yardbird and bovine bold. I also like big ron's rubs
6. What's a good first attempt on uds? Fatty,chicken,wings?
I say start with the easiest cut around, the pork but, cook it till the bone pulls out clean and easy. Rub it before smoking and have a good time.