How to make clickable links and text.
When you’re in the posting window, unless you’re familiar with HTML use the “Visual” tab.
There, you’ll see a chain link looking “thingy.” If you highlight pre-typed text, then click that button, you’ll get a pop-up where you’ll see a field to paste your hyperlink into. Do that then click the blue “add link” button at the lower right of the pop-up.
Once that’s done, you’ll see that the text you highlighted becomes an active link that takes the clicker to the url you pasted into the pop-up.
If you need to do dry runs, you can do a test post and “preview” without having to publish… so practice all you like.