How to use hint in SELECT query?

Could you please elaborate on how one might utilize the hint feature in a SELECT query? I understand that hints are used to provide the database optimizer with suggestions or directions on how to execute a query, but I'm not entirely clear on the specifics of how to incorporate them into a SELECT statement. Could you offer an example or two, highlighting the syntax and potential benefits of using hints in SELECT queries? Additionally, what are some potential drawbacks or considerations one should be aware of when employing hints in their SQL queries?