Install recessed lighting - how?

Order I'd follow: 1. Decide the layout. A rough rule is to space them about half the ceiling height apart, and keep them a couple of feet off the walls 2. Find the joists so none of your holes land on one 3. Use remodel housings or the slim canless wafer type, and make sure they're IC rated if there's insulation up there 4. Breaker off, cut the holes with the right size hole saw 5. Run cable from the switch, connect, clip in Honestly though, with no experience, step 5 is where I'd get an electrician. Adding a new circuit or switch often needs a permit too.