im a 15 year old male about 5 11 and i way 75kg and im not to happy about it. For some reason i seem to put the weight on around my thighs and butt. Im just wondering how i can lose the extra weight i have and put on some muscle and acually look good at the beach. I have some questions.

1. At the moment i have just started riding to school every day (5 days a week) which takes me about 40 mins so its about 80 minutes a day for 5 days a week. Im wondering if this is enough excersise.

2. I wanna get some muscle on me but im not sure how i can do this. Im thinking lifting dumbells doing some upper strength work (push ups, pull ups which i can barely do 3) and doing some core work (sit ups, bridges, etc).

3. Im dead set stuck on the diet lol. I have no knowledge what so ever on what i should eat.

Anyway just wanting to know how to go about losng my weight and yeah hope you guys can help me. Thanks.