The Monoprice stuff is almost all good. They work directly with their own Chinese manufacturer(s) to maintain decent quality for a low price. The only issue I've had is that the retaining clip on their RJ45 plugs often don't exactly mate with the Ethernet port on devices.
You will probably want the bulk cable anyway. Pre-made Ethernet cables are almost always stranded (lots of thin copper wires in a bundle). They're designed to be repeatedly coiled and uncoiled without "remembering" their shape. Their drawback is that they suffer more signal loss and may not work out to the full 100 meter Ethernet spec.
Solid cable is a single copper wire (avoid CCA - copper-clad aluminum - saves cost and weight but introduces all sorts of other problems). If you bend it, it stays bent. It's meant for permanent installation inside walls, as repeatedly bending it or running over it with chair wheels can cause the wire to break.
And just because you'll probably run across the term, plenum cable is designed for use in ventilation spaces (called a plenum when it's above a drop-ceiling). The outer sheathing is a fire-retardant plastic which won't introduce noxious fumes into the ventilation system if there's a fire. For cabling inside the walls of a house, you don't need plenum cable.
Personally I find the toolless keystones harder to use. You have to place all 8 conductors into the correct slots before locking them down. I only have 10 fingers so this can sometimes be a problem. With a punch tool, I can punch down each conductor one at a time, and use all my fingers to get the next conductor into the right slot. A real punch tool makes life a lot easier, but they can be expensive ($50+). The tooled keystones usually come with a mini tool which you can use to press the wires in to their slots (you still need to cut them yourself). Monoprice usually has YouTube videos showing how to use these keystones, which should answer all your questions.
AFAIK, the wall plates (and keystone faces) are standard. I've mixed plates and keystones from Monoprice and Home Depot without problem.
Be sure to follow the wiring diagram on the keystones precisely. A common rookie mistake is to order the wires 12345678. The correct sequence is actually 12356478 (dates back to the wired telephone days, where the middle pair was line one, the outer pair was line two, so you didn't have to keep track of which was left or right). The wiring diagram on the keystone will take care of this for you. When I've accidentally wired as 12345678, it usually works out to about 20-30 feet, then the Ethernet transmission rate starts to slow down dramatically due to all the data dropouts from noise. A cable tester is only $10 and lets you avoid this mistake (as well as making it easier to track down bad wires or crimp jobs).
https://www.monoprice.com/product?p_id=8138