When Siddhartha joined the Ascetics, he began to meditate when it started raining. The Ascetics were scared as a snake appeared but Siddhartha remained calm. The snake used its head to cover Siddhartha from the rain that poured, not attacking him. The Ascetics were amazed and were devoted to following him.
After 6 years of roaming with the Asectics, Siddhartha heard a beautiful song by the river and went to listen to it. He also bathed in the water and a village girl fed him. The asetics were displeased with this and left him. Siddhartha discovered the middle way, between both extremes and found that was how you become enlightened
Siddhartha began to meditate under a bodhi tree. He practiced the middle way until he reached enlightenment. From there, he was no longer Siddhartha but he was Buddha, which means the enlightened one.