RE: Buildin Muscle...Please help me!!
Welcome to MT.
Fat cannot turn into muscle. Gaining muscle will help u burn more fat than u usually would. Although if ur looking just to loose weight, u must do cardio (running etc.), its more effective for fat loss.
Depending on ur budget for a home gym, the equipment will be different.
however, i do encourage you to join a gym. Being a beginner, joining a gym will aid u alot more than working at home. At the gym, there will be people who know what they are doing, and they can help u around and show u exercises. u will learn alot more and understand risks etc.
14 is quite a young age, so i recommend you work with light weights till about 16. u dont wanna cause premature ossification in ur bones (stunt ur growth).
This site is useful, but its always best to have someone who knows how to train with u while ur training as a beginner.