get in, get into: secure a place in a college, university, etc.
get into: familiarize oneself thoroughly with "He really got into semantics"
wear, put on, get into, don, assume: put clothing on one's body "What should I wear today?", "He put on his best suit for the wedding", "The princess donned a long blue dress", "The queen assumed the stately robes", "He got into his jeans"