You won't receive anything from SINP, rather your employer will receive Job Approval letter for related Job without showing any name of possible employee. Then employer can provide that letter to any eligible out land applicant or you.
After that, you have to submit SINP online application in OASIS Platform. The process of both application, OID and Employment Offer sub category is approximately same. After SINP nomination, you have to dend Paper Based application to IRCC (Like OID sub category). You can get Visa in 1 year after IRCC application submission. Here is the related forum link for SINP Application submission
https://www.canadavisa.com/canada-immigration-discussion-board/threads/sinp-online-application.533719/