Maybe a Step format will be clearer:
Step 1 – Find whatever link you want to direct to and make sure it is a complete link which means it includes http:// in the beginning of the link. Example – http://www.youtube.com/watch?v=VDiRG9LpI2c
Step 2 – Make sure the link has been copied from the address bar so you can paste it real quick when you are ready to put it in an answer.
Step 3 – Know the keyword you want to use, which when clicked on, will lead to the site you want it to take it too. Example: source
Step 4 – Put keyword in between quotation marks. Example: “source”
Step 5 – Follow what you did in Step 4 with a colon. Example: “source”:
Step 6 – Follow what you did in Step 5 with the link you have already copied from Steps 1 and 2. Example: “source” : http://www.youtube.com/watch?v=VDiRG9LpI2c (without the spaces in between)
Tadah – source