Most grocery stores and hardware stores (Ace Hardware) are carrying lump charcoal.
Here are some tips I pulled from the internet:
Lighting LumpLump is easy to light if it's kept dry. Use a charcoal chimney or an electric charcoal starter. Do not use lighter fluid, unless you like the taste of petroleum hydrocarbons on your food.
To use a charcoal chimney, just fill it with the amount of charcoal you'll need, place a couple of sheets of crumpled up newspaper in the bottom and light it up. As the flames rise through the chimney, the charcoal is lit. The burning charcoal creates heat and an updraft, which gets the coals burning fairly quickly.
For slow cooking in your grill or smoker, place a pile of unlit chunks in the cooker, and light just enough to cover the top of the unlit charcoal. The charcoal will slowly burn downward, providing you with low, steady heat. Mix a few small chunks of smoking wood in the unlit charcoal to add smokey flavor to your food.
Tips for Using Lump CharcoalTry different brands. Inspect the pieces as you put the charcoal into your grill to sort out anything that looks odd or out of place.
Pay attention to how much burn time you get out of the charcoal, and how easy it is to control the temperature using the ventilation of your cooker.
When you've determined your favorite, see if the qualities it has are consistent from bag to bag. There could still be some variations within a brand, but overall, the lump charcoal should be fairly consistent.
Helpful websites/forums:
http://www.biggreenegg.com/www.kamado.comwww.komodokamado.comhttp://www.nakedwhiz.com/nwindex.htmThe forum members are very helpful on these sites. Obvious rivalry and funny at times. I've tried several recipes from these sites and was impressed.