Got a stick of EDO RAM to get Win95 running smooth for Christmas but it just didn't work. I believe EDO required dual sticks to run or something but there was no money left to get a second stick.

I might have been scammed by an ebayer just now, story is evolving.

I built my first PC in May, and I had no problems putting it together. However, I had a really stupid moment where I plugged in my HDMI cord and I could hear my PC working, but no screen. I tried for about an hour to figure out if everything was plugged in correctly, which everything was. It turned out I plugged my HDMI cord into my motherboard and not my GPU. Since my motherboard and CPU don't have integrated graphics I can't use my motherboard's HDMI slot. I felt so dumb after I realized I plugged in my cable in the wrong HDMI slot.

When I was little I cleaned the back of my PC with a very wet towel. I thought since it was hot, it needed some drastic cooling down. My father ended up giving me a good beating for it.

Not applying thermal paste on the CPU after installing a new heat/sync/fan. Such dumb. Ended up buying a gaming laptop after I basically ruined the speed of my desktop. Live and learn!

Didn't the heat sink come with thermal paste pre-applied? Or was it an used one?

Same here never had any trouble with half a dozen new builds, but somehow  fucked the pins and like you bought a new one and took the old one to a local comp store, they verified the pins were damaged, told them it was like it out of the box and the site I bought it from replaced it and then  told them since I was busy and just so happened to have all the parts with me they could finish it.

Nope, it came with some in a packet that I didn't bother to use out of ignorance haha.

EDO Ram can work fine in single channel.

What likely happened is you bought a DIMM rather than a SIMM module that your motherboard wasn't compatible with.