You should probably do some reading, but they are "no-boil" because they have already been boiled and are all ready in the can.
You boil a couple gal of water and add it to the fermenter, then add the can of stuff, along with additives like malt extracts, sugars, etc, stir everything to dissolve, then add cool water to the top (5 or 6 gal depending on the kit used) and make sure it's at the right temp. Add yeast, and close up fermenter with air lock. Mr. Beer has a similiar method except they add the can to the boiling water on the stove to dissolve and that kit makes only 2 gal. Both of these kits bottle from the primary, but it's not too messy because the bottling tap is above where the yeast settles, so you get very little sediment in your bottles. The Cooper's kits even come with carbonation drops which you use to prime/carbonate your bottles.
I like the Cooper's stuff. The kit is from Australia and their mixes make 6 gal, when you are bottled you have 30 740 ml (24.6oz) bottles (including in the kit).
They have a variety of kinds and you can buy their "complete beer kits" from $19.99 to like $34.99 with most being like $24. It's really quite tasty beer. That includes everything you need, minus the water. Right now Cooper's has a 15% off sale for Father's Day. A good thing about this is you can learn to tweak recipes later, and you can also use the fermenter as a primary later when you want to begin boil brewing. I did that, just added a secondary and a bottling bucket later, but I still use the no-boil kits when I don't have time or the energy to do the whole process.