My son has insomnia. where do i start?

Easy as 1, 2, 3: 1) remove offending agents (caffeine and electronic devices at night), 2) enforce regular wake-up time every morning with no daytime naps or sleeping in, even on the weekends to start out, 3) if these don't work, should see a psychiatrist to rule out some associated condition such as depression, bipolar disorder, sleep apnea, etc.

Sleep hygiene: Is where to start. Going to bed and getting up at the same time everyday; no tv, video games or other stimulating activities close to bedtime; a dark, quiet bedroom; no heavy meals before bed; no caffeine or soda after supper, etc. Lots of info on the web.