Write an article based on this "Select the category for the item. Note your selling location. Describe the item in detail. Use good pictures of the item. Include the price. Title the ad. Post the ad."
Put the item in the category that makes the most sense to attract buyers. For example, if you are selling furniture, choose the “Home & Garden” category. If you are selling electronic equipment, choose the “Computers & Software” category.  Try to include sub-categories like “Furniture” in “Home & Garden” or “Electronics” in “Computers & Software.” This will make it easier for buyers to search for your item. You can also use the “Tell us what you are posting” option on Gumtree. You can then type in the item and the site will categorize it for you. Type in your postal code to mark your selling location so buyers can search for your item that way. Gumtree will then show your item to buyers in your local area. Your postal code will not appear in the ad. Gumtree will use your postal code to classify your ad based on location. Include the type of item you are selling, the material it is made of, and the condition of the item. Note the measurements or dimensions of the item and include a reason why you are selling it.  For example, you may have a description like, “Beautiful walnut dining chair with blue upholstered seat. In good condition with no marks or scratches. It is 34” (84 cm) long x 20” (50 cm) wide. Changed decor so no space for it.” Be honest in your description and do not oversell the item. Be upfront if there is damage or an issue with the item so the buyer knows what they are getting. Take photos of the item on a good camera. Make sure the photos are clear and focused, not blurry. Choose an area with good light, such as a brightly lit room or outside in your driveway. Having good pictures will encourage buyers to contact you about your item.  Include pictures of the item from several angles. Take a wide shot of the item as well as a close-up shot. If the item has a unique design on the bottom or side, take a photo of this detail and include it in your ad. Put at least one to two good photos of the item on the ad. The more good photos you have of the item on your ad, the better your chances of selling it. Note if you are firm on the price by writing “FIRM” next to the price or by writing, “No negotiating.” You can also note if you are willing to negotiate the price by putting down “OBO,” which stands for “Or Best Offer.” Use a short, descriptive title to attract buyers. Make it clear what type of item you are selling in the title. You can also include a note like “Great Deal” or “Rare” or “Antique” if they apply to the item. For example, you may use a title like, “Dining Room Chair, Antique” or “Record Player in Good Condition.” Once you are done with your ad, post it on Gumtree. It is free to post ads on Gumtree. You can then respond directly to buyers who contact you by logging onto your Gumtree account. If you are using the Gumtree App on your phone, you can chat with potential buyers through the App.