Thae, heres my advice, dont feel obligated to tell people, its not like youre gling to magically change ur social behaviours now that youre part of this fandom. Just try to keep it on the down low and not bring it up arround your family, and as for telling friends, i only ever told my close friends because i knew that they would accept me no matter what [even though your family will accept you no matter what anyway if they love you] but i get not wanting to explain being a furry to your family so just try to be carful, but come to peace with the fact that you may eventually be found out so have the answers to the awkward/ hard questions if it were to happen
Ps. All of us went through what ur going through at some point, youll learn to keep your personal life to yourself
Also passwords on electronic devices doesnt hurt lol