There are many different types of buy-to-let mortgages available, such as interest-only buy-to-let mortgages to repayment mortgages. You may choose to purchase through a company, in which case you would need to take out a limited company buy-to-let mortgage. Mortgage availability and criteria also differs if you are based overseas, so your location should be considered before applying for certain mortgages.  The first thing you may be wondering though, is what is a buy-to-let mortgage, and what...