You wrote that you have already found many but they don't work for you. What have you found already? What resources have you tried? How are they inadequate so we can suggest different materials?

In general AI takes advanced math. Sigmoidal functions are everywhere, and calculus, probability theory, and linear algebra are minimum requirements. Usually universities don't teach it until fourth or fifth years because of the math and programming background needed. Do you have the background for it?

It will probably take many training resources before it really starts to make sense.