When you, especially if you are an adult beginner, learn ballet, there is a lot of information to absorb about basic positions. You might be dreaming about doing split leaps and beautiful elegant ballet arm positions. Learn the ballet basics slowly and carefully. You will progress faster with classical technique and movements by seeing, and reading about ballet.
Adult dance beginners are a pretty devoted bunch. The attention to finer detail that it takes to learn ballet is not attractive to everyone.
First tip - how to learn balletic technique using the correct spinal posture is crucial to achieving correct ballet positions. This includes a neutral pelvic position. Discovering that you have been building tension in certain muscles in your every day standing and sitting, and that you have the need to stretch, adjust, and correct your posture, brings you a life long benefit.
If you do not have the time or money to take more than one class a week, you can still learn more!
Once you have discovered an area you need to stretch, make a routine of relaxing and stretching your muscles. You can use a pinkie ball (a small rubber sports ball) to help relax muscles.
Second tip - learn the real deal about turnout. How much you have, how to hold turnout securely, and how to strengthen turnout muscles.
Third tip, learn to develop your foot muscles with daily exercises. This will strengthen your barre exercises, your jumps (allegro) and your releves (quick movements from a demi plie up to your highest arched demi pointe position). Foot exercises are also exercises to prepare for pointe work - if that is a particular goal of yours.
Ballet is an art form that increases the magical and imaginative dimension of life. Understanding how to learn ballet increases your enthusiasm and brings you real physical results. It's your journey, it's your dance. Enjoy!