If you ride your bike like I do you no doubt have knocked your wheel out of true a few times. In my early days of riding I would just head over to the local bike shop to have it fixed. However, as you well know mountain biking is a very expensive hobby so learning how to true your own wheel is a good way to save money. It’s not incredibly difficult but I recommend you use an old backup wheel to practice on. Once you get the hang of it you will no longer be at the mercy of your local bike shop. Use the money you save to buy that shinny new bike part you’ve had your eye on.