Mistake #1: Not knowing what you want from Yoga?
The reality is that there are a variety of different styles and forms of Yoga. Each has it's own different type of attractions. Ask yourself what it was about Yoga in general that attracted you and then you can investigate a style that caters more specifically to it. You may like to set goals, they can either be physical, mental or spiritual. If you do then it's a good idea to discuss them with the instructor of any class that you take before you begin. Yoga instructors are usually very approachable and happy to talk about their passion. They will be able to talk to you about your goals for the class and let you know if you are aiming to high and where to start. Make sure your goals include a time frame so it becomes something that is measurable.
Mistake #2: Jumping in Head on First!
Most people having decided to give Yoga a try, many take a running leap and jump in to a 12 month stage by stage class. These classes are usually an upfront payment arrangement and progress from one level to the next as the weeks progress. They are a fantastic way of learning Yoga and becoming very good at it, but it's quite possibly you will choose a class that is not ideal for you so make sure that you speak to the instructor before jumping the gun.
The best way around this is to join a Yoga beginner class, also known as a drop in class. Rates are usually reasonable and you can get special rates for being a first timer. If you do these classes for a few weeks you will notice a high turnover of students as new people join and old people move on. These classes are designed to give you a very broad feel for the different types of Yoga. The level of the students in the class usually varie greatly so you can expect the instructor to keep the classes at a beginner's level but offer some type of challenge. The other key benefit of doing this is that the classes are pay as you go so there is no big financial strain on your wallet while you decide the type and style of yoga that best suits you. You are also not obligated to attend every class. With longer courses, you can fall behind quickly if you miss a week or two in a row. With the pay as you go classes, you will find that while each class is different the level stays quite low but challenging in other areas to cater all the newer people joining in.
Mistake #3: Choosing the wrong teacher.
A lot of times, having the wrong instructor will either cause you to come back or leave for good. Everyone teaches different and you may not find that perfect instructor the first time. It could take several tries to find that right one. You should not give up yoga just because the first time went bad for you. Every teacher has a different flow or personality. However, when choosing your instructor, make sure to ask questions about their background and history to gain insight on the knowledge that they know.