Mystery problems with the cooling system! (1998 2.0L manual)

Hey everyone, I've finally encountered a problem that I can't solve and desperately need some help. A family member keeps referring me to the Chilton's, but that's as useful as a paperweight.

Issue 1: Between 2 and 3 weeks ago, I noticed that my blue engine light (solid/cold) no longer comes on. I've had no issues starting the car, nor issues while running. I just figured the blue bulb was burnt out.

Issue 2: However, a few days ago, the dreaded red coolant light came on. Not flashing - that's an easy one. Engine overheating; I immediately pulled over, but coolant was full. Managed to make it to work by letting the highway air cool the engine and the light didn't come back on until I had to idle while turning into the parking lot. That's when I noticed my fans weren't kicking on at all.

What I have done:
checked coolant levels - full
checked fuses in dash - fine
checked fuses on top of battery - fine
checked fans - spin freely/no obstructions
water pump - new/replaced one year ago

Unfortunately, this is where my knowledge gets vague. And I actually have no clue if the two issues I listed above are even related. I've seen recommendations to check multiple things that I can't find because I can't find a diagram of their locations. Or to test things with no explanation on how to test them. Can anyone give me the next couple troubleshooting steps? Maybe tell me where I can find the radiator fan relay? Is there something obvious to try out first?

I hate to say it, but talk to me like I'm 5. I know exhaust systems, fuel lines, and everything non-mechanical..