The first steps come naturally, as soon as the feet can carry the body-weight and the baby gains confidence and balance. Most babies start walking on their own around 10 to 18 months old.
A baby starts pulling him- or herself up from 9 months on. Between 9 to 12 months they are standing on their own and taking the first steps while holding on to what is around them. On average babies can walk by themselves around the 14th to 15th month.
Do not try to overstimulate this process. Every baby develops in their own time, so do not worry if your baby is a few months early or late with walking.