How come you didn't read the just-preceding page to the one you gave us?
Look at the example they give there:
SELECT LastName,FirstName FROM Persons
And then just combine that with the WHERE examples they give here:
In point of fact, it is usually considered *BAD PRACTICE* to use SELECT *
-- It gets all the fields for each found record, and you seldom really need all the columns
-- When working with PHP/JSP/ASP/etc. clients, it causes the client code to have to *ask* the database for all the field names and types, in order to properly interpret the results
So good queries *will* limit themselves to SELECT of only certain fields.