गाना Lessons

I'm the same as you, I प्यार गाना and I'm neh... well, I want to improve but I do know that गाना lessons can make a definate improvement on your voice- even though it can take a long time- and I suggest that आप do get lessons if आप want to improve.
I don't know about lessons on the internet, I don't think they would be as good as ACTUALLY having someone there to listen and help you, and also, having someone there would boost your confidence if आप ever wanted to perform professionally.
I personally, would say go for ACTUAL गाना lessons but they are really expensive (or so I've heard), so unless आप या your parents mind spending quit a bit of money, go for real lessons.