Baby 6.5 months old. At 5 months he stood on his hands and at 6 began …

Baby 6.5 months old. At 5 months he stood on his hands and at 6 began to move around actively throughout the house. He just doesn't change hand-foot positions but jumps. Now he is trying to sit down. He is curious if he has mastered crawling will he be able to crawl like a soldier? And that he jumps very confidently throughout the house is it normal? Does he need massage?