Enrollment in the health insurance marketplace can be complicated. The open enrollment in the marketplace for health insurance begins in October 1. Medical coverage can start as early as January 1. The last possible day for enrollment in the market during the open enrollment period is March 31. Starting October, you can begin working to get coverage through the Marketplace but it’s not too early to start learning how it works.To help you get started, here are steps that you can take right now so you can be ready to sign up once October 1st rolls around.