another lawyer chiming in here. your father is right. assuming that the provision is enforceable, your lease automatically renewed for an additional year when you did not give the landlord notice 30 days before the end of the lease term.
does the lease deal with who is to maintain the premises and in what conditin are they to be maintained?
you can't break the lease risk-free without justification, such as the premises are uninhabitable. usually the landlord will keep yoru security deposit if you break the lease without justification, but be forewarned...as a general rule, the tenant who breahces the lease and moves out may still be liable for rent for the rest of the lease term. the landlord has an obligation to find a new tenant, but if he can't -- you're stuck payng the rent even if you don't live there.