Hi! Oily skin is common at your age due to the hormonal changes. Do not use harsh face washes to remove the oil. The body  only produces more oil if you remove it. Instead, dab off the extra oil with a handkerchief. Splash water thrice a day.  Use normal face wash or baby soap for face. For pimples please avoid junk, spicy food. Do not break the boils.  You can refer my health feed on practo on Top 5 causes of acne. Hope this helps.