I have copy pasted my answer what I had written in Quora. Though my answer was not at all lengthy. But henceforth I will take care of that.
Are there any good online German Institutes other than Geothe?
You can visit this site Loading... . In this site you can choose teachers of your choice. You can fix up your time and start learning. You can also interact with your teacher through skype- or any other method which is suitable to both of you.