There has been a revolution in online learning over the past few years, mainly thanks to Skype, Google Talk (the hangouts are going to be amazing for teaching and learning) and other software. Because of the ease of setting up a website and promoting English lessons, there are a lot of "teachers" out there wanting to find students. The problem is it has made it easy for anyone to just offer English lessons. When choosing your online English course, it is important to check if the tutors are qualified and experienced. Ask for a qualification. Ask to see how long they have been teaching and what methods they use. Choose a tutor who you feel is legitimate and wants to help you improve.