After login, click on the "Sell" link on the main menu located at the top of the webpage. You will be sent to step 1 of listing your item.
Click the Main Category that your item fits in to best, then choose the appropriate sub-categories.
Item Name: Enter the title of your auction in the ?Item Title? text box. Enter as descriptive text as possible, as this is what will drive buyers to look at your auction(45 characters limit).