With all joking and cynicism aside, it depends on a number of things; where you are emigrating from, whether you have any professional qualifications, if you have a job waiting for you here, whether you have a sponsor etc. Preference is given to those from certain countries, these countries vary depending on immigration policies put in place by past governments. At the moment we still have a department run by Liberal appointees and some policies still relflect those views. If you are coming from the UK, Western Europe, the Netherlands or Scandinavia, you may want to take up residence in Jamaica first, (well, maybe that is a bit cyinical). A freind of mine has been here for almost ten years and, (apparently) ran afoul of the immigration department and was nearly deported recently. Under the policy du jour, Brits were last on the list, behind refugees, Somolian war criminals and Jamaican gangsters. He could only immigrate if he had money and started his own business. Under that provision he cannot be covered by our health care until his business shows a profit and he pays taxes for two years, nor can he buy his own health insurance, that is the law. His case is still under review.
Search the government web sites, but like any government website, they can be hard to navigate through. Then you may want to consult with an immigration lawyer, doing the homework first can save a lot of grief later. But beware, there are a lot of hidden rules, and some get made up on the fly.