Welcome JD1178,
The “red spot” question is one of the first things newbies ask about. It isn’t dangerous and usually they go away by themselves within a few hours. I’ll point you to the Search button at the top of every page. If you enter “red spots” (including the quotes) in the Search By Keyword space, and then select Search Entire Posts and Show Results As Posts (bottom left panel on that page), you’ll be presented with every post ever made about red spots and you can read them to get much more information than I’m willing or able to type here. :)