We all do it differently because we all have different climates, different schedules, different lifestyles, different experiences. I brooded my first batch indoors and did not enjoy it - the chicks were chirpy, they weren't sleeping (light 24/7), they were messy and smelly. And they ended up with coccidiosis.
After that I've brooded outdoors, and it's been a lot less stressful for me (no health issues other than what a couple were born with), plus allows them to learn to be chickens from other chickens. But not everyone has the set up to brood outdoors (i.e. lack of electricity, no secured area).