Design patterns get obsolete. Programming languages get obsolete. Libraries get obsolete. Mathematics doesn't. Learn CS foundations, logic, proofs to get bette

Design patterns get obsolete. Programming languages get obsolete. Libraries get obsolete. Mathematics doesn't. Learn CS foundations, logic, proofs to get better at understanding and gain abstraction experience. Edit: books: How to prove it by D.Velleman, Proofs and concepts, Discrete Math by S.Epp