How to deduce the discrete mathematics P → (P → q) P → q? And what is the value of P ∨ P, P ∧ p

How to deduce the discrete mathematics P → (P → q) P → q? And what is the value of P ∨ P, P ∧ p

p→(p→q) ┓p∨(┓p∨q) ( ┓p∨┓p)∨q ┓p∨q p→q
p∨p p
p∧p p