Okay let's try this again-
Chakra is needed for even the most simple of jutsus. Also, the moulding of chakra is done through using your physical energy and is in every cell in the body and spirtual energy gained from training. There is 361 chakra points in the body. There is 5 elemental chakra abilitys,fire, earth, water, lightning , and wind. Every ninja has there own change in chakra, and through training can develop multiple changes, tho it is very rare to see a ninja with all 5 change in chakras. Kekki genkai users combine different chakra natures in order to produce a different element such as ice, which uses water and wind.