I am absolutely fascinated by this blog written by Lauren Piovesan, the founder of ESL Reads. Despite spending two decades simplifying texts - a task that I enjoy and sometimes find a challenge - I've never really analysed what I'm doing.
Although written for EAL (English as an Additional Language) teachers this is a useful guide for both experienced and new teachers of ESOL, adult literacy (Functional Skills English) and indeed vocational subjects.