I have one light that works with a light switch in the basement. The switch is at the top of the stairs and the light is at the bottom of the steps. There are 3 other lights that all work with pull chains. How can i hook up the other 3 to the switch so when I turn on the switch all 4 lights come on. Right now there is Romex wire leading from one light to the next with white, black, and a ground wire in each romex wire.

Im in the process of installing cans in my basement ceiling. The plan was to have 12 of them. 6 down each side. I have all the wire ran and such, but yesterday when I was down there just putting around I was reading the fine print that is stamped into the can. It says, "maximum of 8 no.12 awg branch circuit conductors suitable for at least 90 degrees permitted in junction box (4 in 4 out)" MY question is this. Does that mean if im going to run all 12 It probably would be a good idea to have them on 2 circuits, ie: 2 seperate switches? Im already using 12 awg. The lights that I purchase are from Commercial Electric and are rated "IC" althou there will be no insulation in the drywalled ceiling. Im going to have a bedroom downstairs as well, and wanted them to be on a 3 way swtich so my daughter can hit the switch when she went to her room and then could turn them off when she was there and vise-versa. ( she has a problem with the dark i guess, lol) Any input would be great appreciated! Thanks in advance!