Is there any kind of electrode guide available that would give information such as what various electrodes are used for and what amperage is required? For example, in the case of a E6011, what materials would you use it on, what thickness of material, and at what amperage would you use?

Obviously, this is a newbie question but I just got my PA200 and I am looking to buy some electrodes.
Most of my projects will be steel plate or angle iron and vary in thickness from 1/16" to about 1/4".

Thanks