You as a end user can not register your domain names directly from a domain registry. That is why you need a registrar of domain names. The main domain registrars in the Internet are domain name registrations companies as well as web hosting providers, server providers and others.
As one of the popular Top Level Domains, the .ORG domain name ($10/year) can be searched directly at a accredited .ORG Domain Registrar.
In case that the desired .ORG domain name can not be registered, the Internet offers you an opportunity to choose other alternatives. For example you can try some of the most popular gTLDs such as .name or .com, as well as some of the most popular ccTLDs such as .us, .co.uk, .nu, .de and others.
In order to feel re-assured for your .ORG domain names one of the most important things that you need to do before you choose a .ORG Domain Registrar, is to make sure that it is accredited by ICANN (international non-government organization which is responsible for maintaining a the system of top level Internet domain names as well as for the registration of Internet addresses). That way you can be safe both for your domain names and your online presence.
And if you are looking for a way to become a .ORG domain reseller and for a reseller hosting provider we would like to recommend the company called ResellersPanel.com. This company offers everything that you require to start your own hosting company.