Are you interested in making money by buying and selling domain names? It's a great way to earn a passive income, and the potential profits can be quite substantial. 

First, you'll need to identify potential domain names that have value. These could be generic keywords related to a business, brand, service, or product - the possibilities are endless. You'll also need to conduct a domain name search to check for availability. 

Once you've identified a valuable domain and checked for availability, you can then register it with a domain registrar. Depending on the registrar, you'll be able to pay for the domain and set up hosting in a matter of minutes. 

Next, you'll need to create a website to go along with the domain. You can either design the website yourself or outsource it to a web developer. If you don't want to use a website, you can also use the domain for email hosting, redirects, or other services.

Once you have the domain and website set up, you can start to market and promote it. You can use SEO, PPC, and other marketing tactics to help drive traffic and potential buyers to the domain.

Finally, you can list the domain for sale on a website like GoDaddy auctions or sedo. You can also reach out to potential buyers on social media, such as LinkedIn, or contact businesses directly that may be interested in the domain.

Buying and selling domain names can be a very lucrative business. With a bit of research and effort, you can start to make money with this passive income source.