As you are 14 you would have to be with a adult, what are you after a spring, pcp or co2. A spring gun will last years, a pcp will have to refilled with air and a co2 will need new co2 bulbs. For spring guns look at the bsa lightning or supersport, any of the weirauch range as they are good, air arms tx, heavy though like weirauchs. For co2 crossman ratcatcher or rabbitstopper, smk xs79 or pcp bsa ultra, theoben rapid range, air arms series. Try to hold the gun before you but it as the weight of it will affect how much you enjoy shooting