In order to apply for a visa for your spouse or conjugal partner you and your partner must be 18 years or above. Your partner must be a member of the family class, otherwise you will not be able to sponsor them. You must be a citizen, permanent resident, or have a work permit to sponsor your spouse.
Sponsorship applications take approximately 12 months to process from start to finish. They are typically not processed much faster than 12 months but they can take longer, depending on the nature of your case.