Good question! You should be able to add a link from the web to your answer. Here's how you do it:
Click on the link button on the edit screen (marked in green below).
Copy and paste the website you would like to insert into the bottom of the two boxes (marked in green below).
And that's it! Leave a comment on this question if you're still confused.
You can add links manually!
As an alternative to using the "Link" button, you can add links manually by using brackets and parentheses.
Basically, what the "Link" button does is set up the syntax for creating a hyperlink text.
The syntax looks like this
#["text you want hyperlinked"]("the URL of the website")#
So, you write the text that you want hyperlinked in between brackets, [ ], and the URL of the website in between parentheses, ( ). Mind you, the left parenthesis must come immediately after the right bracket, i.e. you can't have any spaces or other character in there.
As an example, let's say that you want to add a link to Wikipedia in your answer. You start by writing out Wikipedia, or whatever text you want, in between brackets
Next, add the URL of the website in between parentheses
after the right bracket. This will get you
#->#the link has been added to the word "Wikipedia".
You can use whatever text you want as the tag for the hyperlink. For example, you could add the link to Wikipedia by writing
...for more information on this subject, visit this website.
This time, you have the text "visit this website" in between brackets, followed by the URl of the website in between parentheses.