The lottery process starts the night before with pieces of paper and a list of all the families. Once the slips are finished, they are put into a black box, which is stored overnight in a secure location. The next morning the town residents gather and the heads of the households draw papers until every head of household has one. Each member of the "winning" family then gets to draw a paper in order to select one individual person.
It has been much analyzed and studied, but I haven't researched or read any of that. I'm just reading the story for the shock value and because it's the month of Hallowe'en. It seems to fit the mood.
The story has been dramatized for radio (you can listen to it here), for television and for film. The 1969 short film is a faithful adaptation and features Ed Begley, Jr. in his 2nd role. That one can be watched on youtube, divided into 2 sections. part 1:
The 1996 full-length television adaptation, which can be seen online at youtube here, is much more loosely based on the original story than the 1969 version. I suppose when they expanded it, they needed to fill in all that time. The story is better suited to the short film time frame.
A 2007 version is a short film and remains fairly faithful to the original (tho not as faithful as the 1969 version), but the music is heavy-handed.
I wonder what Shirley Jackson would've written as an older woman. She died in her sleep when she was just 48.