This talk is subtitled ''Schwinger-Dyson studies for beginners''. Progress over decades in learning about strong coupling QCD is the background to this talk. However, QED is far easier to understand and will be discussed as a guide to a consistent strong coupling truncation of the infinity of Schwinger-Dyson equations. Every step leads to new issues and new problems. Nevertheless, this approach to strong coupling field theory naturally embraces quark masses from zero to top, naturally encodes chiral symmetry breaking and continuously connects asymptotic freedom to confinement.