Copy paste into URL, replace the space with a period.
When you download the files, move them into:
Documents> Starcraft II>Accounts> (8 digit user ID)> 1-s2-(some number)> Saves> Campaign
Alternatively, make any random save in sc2 campaign and do “show in folder.” and move downloaded saves to there.
I currently have all the colonist missions, all the covert missions, and all the char missions prepared. If you all really want, I could finish off with the rebellion and artifact missions.