SSI and SSDI are fairly straightforward to apply to. All of it can be done online, although you still might need to send in some paperwork (pay stubs, tax paperwork, etc.) As of the time of this posting it can take up to a year to get on disability. This is hard, and inconvenient, but the more timely you are with responding, the quicker this process goes.
For SSI and SSDI it is the same process. They have a very navigatable website. If you click HERE you can schedule an appointment to have someone help you, or you can start the application process yourself online. To apply you will need a social secutrity number, proof of income (pay stubs, w2s, etc), proof of resources (bank statements, deeds, certificate of stocks, etc.) proof of housing, medical reports, and work history. The office will need to see original documents, but you can mail them in.
As I said before, this process as of 2023 can take up to a year to process, so make sure you apply early.
