There are many different things with a PA28 vice C152, but they still fly the same. Ok so a teeny bit faster, and the controls feel a teeny but heavier, but they still essentially fly the same.
The 'real ' difference from a C152 to a PA28 is fuel management.
C152 = on/off simples.
PA28 = left tank, or right rank, or off; and an electric fuel pump. No both as Per C172.
Your instructor will teach what he/she thinks best with regard to leaning, approach speeds etc. And as many have said so far read the POH. Other than that you'll learn how the aeroplane acts differently in different configs, all the fun of flying a new type!
Enjoy!