Thank you for the questions and the recommendations. I'm a non-tech person. It sounds like you are a more tech type person.
I realized that Ghostery and Adblock were redundant, but I figured that more protection couldn't be bad. Unfortunately, I think I was wrong on that. I had just installed uBlock a few days ago and wanted to try it out, so I left the others running. My Firefox froze up a couple times. I'm uninstalling Ghostery and Adblock (thanks!) and hoping that helps. I'm still pretty unfamiliar with uBlock. It says that it's filtering hundreds of items, but I can't tell what they are. Is there a place where I can see what it's blocking?
I checked out the Click & Clean. Thanks for the recommendation. I'm not sure I like that it scans the computer for malware, so I have to take a better look at it. I like my extensions to protect me from things that are coming from outside. I'm not so happy that they try to look inside my computer. Perhaps that's not what it does, and it was just poor wording in the description.
I looked at the Iridium browser. Is it German? Not to be region-centric, but that gives me pause, only because the laws here are different, so I don't know if that affects anything.
Thanks again for the advice. I appreciate it.