Nice work Ray. Wish you were closer, I probably have 1,000 ft of CAT 5E cable in the shed. You can buy the wall plates and connectors at Lowes or HD. They also sell the crimper to install the connectors on the end of the cable. Some of the connectors are color coded so you know how to put the wires in the connector, there's 4 pairs. A signal and ground in each pair but they don't remain in pairs. You have to swap the ground between two of the pairs. Here's a link that shows how the wires get paired up.
https://www.google.com/search?q=cat5...x-a&channel=sb
Run all the cables back to where your modem will be. If the modem doesn't have enough sockets for all the cables run a patch cable from the modem to a switch then plug the cables into the switch. If you need a switch PM me your address and I'll send you one. I'll look, not sure but I probably have a mess of connectors somewhere too. I wired every room in this house with RG6 coax and CAT 5E years ago before everything started going wireless. Also wired multiple computer labs in my prior life. Based on the work you've done so far I'm sure you can handle wiring for internet.