Facebook Marketplace is an online platform where Facebook users can buy and sell items within their local communities. It is accessible through the Facebook website and mobile app, and allows users to browse through listings in various categories, such as clothing, electronics, and home goods.

To use Facebook Marketplace, you will need to have a Facebook account and be at least 18 years old. You can access Marketplace by clicking on the Marketplace icon located in the Facebook app or by visiting the Marketplace page on the Facebook website. Once you're on the Marketplace, you can search for items, filter results based on location and category, and contact sellers to make purchases.

If you're interested in selling items on Facebook Marketplace, you can create a listing by uploading photos, providing a description, and setting a price. You can also choose to list your item in multiple categories and share your listing on your Facebook page or in Facebook groups. Buyers can contact you through Facebook Messenger to arrange payment and pick-up or delivery.

It's important to note that Facebook Marketplace has its own set of rules and policies that users must follow. For example, prohibited items include illegal or prescription drugs, firearms, and tobacco products. Additionally, users are encouraged to meet in a public place and to take precautions when buying or selling items from strangers.