How do I convert this T-SQL query to use an explicit join syntax?

Question

I have the following Select statement, but want to change it to use iner joins as I believe they are more efficient, but not too sure where to start.

DECLARE @myNameID  int
DECLARE @myAddressID  int
DECLARE @myFirstName nvarchar(256)

SET @myNameID = 1
SET @myAddressID =1
SET @myFirstName='Nathan'

SELECT @myNameID = myNameID 
    FROM

     NameTable Name,
     AddressTable Address,
     CountryTable Country

    WHERE
     Name.[FirstName] = @ myFirstName and 
     Address. AddressID = @ myAddressID and
     Address.CountryID = Country.CountryID  and
     Name.SecondID = Country.SecondID

Answer 1

SELECT @myNameID = myNameID     
FROM  NameTable Name
INNER JOIN  CountryTable Country ON Name.SecondID = Country.SecondID
INNER JOIN  AddressTable Address ON Address.CountryID = Country.CountryID     
WHERE Name.[FirstName] = @myFirstName 
and Address. AddressID = @myAddressID