Is there a way to receive notifications by email when someone replies to a post I am on? I don't see it anywhere...but I am ultimately not that bright and probably did it wrong. (weeping, weeping...)
Below your avatar at the top of the page there is a menu: "Home," "Help," etc. Fourth from the left you'll find "Profile." Click that.
On the left side of your Profile page you'll see a category: "Modify Profile." Fourth on the list is "Notifications." Click that.
On your "Notifications" page, you can choose various options. I think the one you're looking for is "Turn notification on when you post or reply to a topic," so tick the box next to it. For notification emails that will have posts enclosed, tick "When sending notification of a reply to a topic, send the post in the email (but please don't reply to these emails.)" You can also refine what notifications you receive and how they're sent in the two selection boxes below the three main choices.
Once you have things the way you think will work for you, click the "Save Settings" button, and carry on.