To add a torrent just click on the "add a torrent" button in the bottom menu
Then a menu should open:
This gives two options for adding a torrent:
Add a torrent via url - if you know torrent URL you can just add it into "Torrent URL" field like on this screenshot:
Add the torrent throught direct upload *.torrent file. To do this firstly you must download a *.torrent file from the tracker into your home PC then just click on "Browse or Choose Files" button. Then just browse to the *.torrent file you wish to add and then click on "Open or OK". Then the torrent should be added into "Torrent file" field, like on this scsreenshot:
Now click on "Add File".