Yes, I use those patches (or similar ones). I buy the glue separately. There are different grades of rubber cement; the stuff they sell at stationery stores is made for gluing paper, and it isn't very good for rubber patching. Contact cement is also not very good. What you want is a Vulcanizing rubber cement. As long as it's a vulcanizing rubber cement, it's good. I've bought a dozen 1-oz tubes of Slime cement, for example... always carry an unopened one in addition to one that's been used before. The latter is probably okay... but if not, pull out the unopened one.

You can get a roller tool to press the patch down. Good idea. I'm especially fond of this one:


Roller Rasp 2 in 1 Vinyl Rubber Patch Tool for Boat Tire Tube Bike 89PQ | eBay

but there are more deluxe ones:
Car Truck Handle Tyre Tire Repair Tube Patch Stitch Wheel Roller Puncture Tool | eBay
The roller used for pressing screen came into window screens is a good substitute.