Photosynthesis help needed! BIOCHEMICAL PATHWAYS!!?

I need to do research for biochemical pathways. Can anyone help me with these questions? It would be very helpful! Thanks!

1.) Describe the biochemical pathways of the light and light independent reactions in C3 photosynthesis. Begin with a molecule of H2O and CO2, and end with a molecule of glucose.

2.) Discuss how C4 and CAM photosynthesis improve upon C3 photosynthesis. Include both advantages and disadvantages of each process. Describe appropriate leaf anatomy to complete discussion.

THANK YOU SO MUCH IF YOU CAN HELP ME! ANYTHING WILL HELP!