When you go to the top of any page & find any DNA link in the drop-down & click that link, it will take you to different parts of your DNA page. Under the heading "DNA Tests for (whoever you are)" there is a row of tabs where you can find different bits of information on your DNA.
It also has a heading towards the bottom of the page titled "Add new test information". When you place your cursor in the data entry field next to the "ADD TEST" button & click, you will get a list of different DNA tests (there are 12). Pick whatever test you took to populate the data entry field with the correct information & click "ADD TEST". The rest is done for you (Not like a GEDCOM upload or download where you will have an actual physical file to up/download). Once the information is there, sometimes 24 hours to update, you can use the tabs at the top to explore you & your DNA. Have fun!