SFI is probably the ideal business opportunity for a disabled person. They can work from home in an environment they are comfortable in. Most of us that join SFI have no marketing experience, we all learn from reference library, sponsor and co-sponsor and a2a. As well as from forum and launchpad lessons.
As long as they are prepared to read and learn and do, there is no reason a disabled person cannot succeed in building a successful SFI business