Ditto from me for charcoal and a chimney. Three or so double pages of newspaper wadded up and a single match will do it -- walk away and come back in about ten minutes, dump the coals, and cook. Easy.
Always use a meat thermometer (the "stomach bug" usually is food poisoning). Calibrate the thermomter by getting a glass full of crushed ice or tiny ice cubes and a small amount of water in the bottom. Place the tip of the thermometer in the water and wait a few minutes. The thermometer should read 32 F (at sea level, but usually close enough).
Temp ground beef to about 165 F. Ground meat is different from whole cuts.
Having cooked on a grill for many years, I gotta disagree with America's Test Kitchen -- searing does work to help (repet, help) in sealing in juices. They also rinse cuts of meat and you probably don't need to do that since it just washes off most of the liquids that flavor the eat. Meats handled properly in processing and in store, and that are cooked properly and safely should pose few if any health problems.
A couple of big tips for burgers --
1). the leaner ground beef (say 95% lean) can be really dry and not give too much flavor. You have to have some fat so the burgers are juicy, have flavor, and good texture. Dpn't be afraid to use 90% or even 85% for great burgers.
2). and this is a BIG HELP, btw. Let the meat rest for a few minutes off of the heat after it has cooked. The tempertature will continue to rise for several degrees (really, it will), and the juices will work their way back into the meat. Think of it as steam cooking and pulling off the lid before things cool instead of waiting. The steam just bursts out and so will the juices in meats.
And again, charcoal rocks!