I note that when I misspell a word in a post, I get the squiggly red line under it, but there doesn't seem to be a mechanism in place (or if so I don't know how to use it) to easily check and correct spelling. Am I missing something? I end up opening a new tab and figuring out the correct spelling off-site then coming back to correct. I'm rather tweaky about using proper language, which seems to becoming a lost skill.

right click on the word that has the squiggly red line and it will give you the correct spelling

Well. That is certainly simple. And will save me tons of time switching between tabs. Sheesh. Thanks!!

Thanks! For me, it's been grab my garden book to check spelling.

It's limited and not always correct. Sometimes you have to click the 'add' button when you know it's the right spelling. Every time I wrote daylily, I got the red "wrong spelling" and it suggested day lily. I finally 'added' it so it would stop annoying me.

I have found that when I see the wrong spelling squigley line, I click on it, and see the "show correct spelling' but it doesn't show anything. I'm on Firefox when that happens.

Its great for adding names of plants I can never remember how to spell and that are not spelled in a normal way.

As Karen alluded to, this is normally a function attached to your browser (Firefox, Chrome, Microsoft Edge, etc). Between them, the dictionary/spell correct function might differ.