Here is a little chart i made to help everyone out. It shows which tungsten you should use for which material and how thick of a tungsten for the amps your welding at. It also has gas flows and polarity. If there is anything that i forgot here just let me know and i will add it to it or if anyone wants another type of chart with different info just let me know. I hope this helps everyone out.
You can view it here or download it from the link below.