Football is one of the most popular sports in the world, which means that many children also play football. When we are training children, we should be very careful because they are prone to injuries, and the reason for this is that they are growing and developing. Children should be coached by an experienced and professional person, not a beginner coach unless supervised by a more experienced coach. The aim of this work is to present the basics of training for children for the development of motor and functional abilities. Each stage of a children’s development also requires a different approach to coaching. Coaches are extremely important in this process, which should have a good long-term training plan and program where it is crucial to develop some dimensions and abilities in the time period affected with appropriate training operators, taking into account the gender, age and health of the young athlete. Every ability has the best time to develop and that’s important to know. From the initiation phase to the top performance, the steps should not be skipped. There are certain principles of how and when to train certain abilities. Each child requires an individual approach and a special long-term training plan and program. Some children are more advanced than others (accelerators), which means that they are more developed than their colleagues and that they require a different approach to training. Therefore, one should be careful and evaluate well what to do with them, whether and when to put them to train with an older age. It is important not to neglect children who develop later (decelerators), which is a common practice with coaches, and the reason is that coaches demand results and do not have time to wait for their development. It is a common occurrence that decelerators in senior age are better players than accelerators, and the reason is probably that they did not skip the training phases and that they reached their peak in senior age.