"I would like to work on an XYZ fantastic project I have in my mind in ABC programming language, but I do not feel that I have the knowledge required or that I am anywhere near experienced enough to perform."
Do you think someone should work on a project (even if it is a small, personal one) and try to acquire skills and knowledge in the process, or he should not even start working on a project unless he has at least a respectable level of experience and knowledge?
No one is born with every thing. Whatever we learn is through our experience. If you keep on thinking that "i cannot do it", well, then you will never do it. If you have stackoverflow , google and confidence in yourself, go ahead. You can get help on anything from here. You will only learn something when you do a real project. Make mistakes and learn from them.