Hello Helen, there are a couple of ways to do it, this is the proper one, and it's a similar procedure for doing it in a post (use advanced editor).
1. Go to the web page you want to link to and copy the URL in the same way you must have done for the full one that's in your sig line.
2. Go to the signature editing screen in CC
3. Type in what you want to in there.
4. Select the word or phrase you want the link to be from (or the whole lot if you're lazy like me) using the usual holding left button and using the pointer, or shift and an arrow.
5. Click on the little earth globe symbol with what looks like a figure 8 - supposed to be a link of a chain - on its side at the bottom. Its 5th from the right
6. You will be presented with a dialogue box asking for the URL. Paste it from the clipboard.
Done.
Let me know if you have a problem and I'll sort out some screen shots for you.
David.
