Any one has boys!

Hello there hoping u guys/girls can help me out I'm a mom of a 10yr. Old boy I'm asking if u guys know when boys starting development to a young man my son is starting to get pimples on his face , development under his arms, n starting to lock the door in his room, change his Facebook password on me... Help anyone I need to know if I should watch him more or if his starting to become a going man. Any advice would really be appreciate... Thank you