mi - my ; mío - mine
tu - your (informal) - tuyo (yours)
su - his/her , suyo
(usted) you - formal, suyo
nuestro - our, ours
vuestro - your (you pl)
su - their , suyo - theirs
Keep it up.
If you need Spanish classes with me, please feel free to make a reservation so we can start as soon as it is possible.