A valid passport is required to travel to Granada. If you do not have it or need to update it, you will have to do so immediately. The time to obtain it can last 2 to 3 months.
Some additional documents for your studies in Granada will depend on the passport in order to apply for them. These documents are the Visa for US and Canada citizens and the Certificate for Criminal records either by the FBI or RCMP.
If you are an US citizen, follow this link to access the necessary information to obtain your passport or to renew it in case you already have one. If you are a citizen from Canada, you can follow this link.