Choosing an English speaking course can be daunting. There are so many things to consider. For example, is a video, audio, online, or in person course a better fit? What will work better with your schedule? How well do you need to know the language? Do you just need to know how to read it, or are you going to be living in a new country? The answers will all help determine what type of course you need.
If you simply need to know how to say enough to get by on a short vacation, an audio or video course might be sufficient. These allow the flexibility to study whenever you want, but do not really allow you to test your mastery. Therefore, you are on your own when determining if you have mastered the language to the point that you will be comfortable in the situation you need it for. Similarly, there is the option to watch videos online, and often these courses involve question and answer session that you can log into after watching the videos. This type of English speaking course typically utilizes chat rooms, but they can include conference calls as well.
The online video option is ideal for those who want an English speaking course with the flexibility of videos, but need to be sure they master the language a little more fully. The question and answer sessions are not as flexible, but offer the opportunity to make sure you are on the right track. This is especially true if there is the option to speak on the phone or via Skype, as the instructor can check pronunciation. If working via Skype, they may be able to offer instruction to help make it easier to pronounce certain words if they can tell that mouth formation or tongue placement are off.
The best options for an online English speaking course if the language needs to be fully mastered, is one where Skype is utilized for the entire session. Though some flexibility is lost in scheduling, as they are live courses that have a set time, there are many advantages. Perhaps the largest advantage is that instruction, questions, and feedback can happen in one session. This allows for questions and issues to be dealt with and corrected immediately, rather than having to wait for a session after watching a video. Any course that offers an oral mastery exam is going to give you a better idea of your success as well.