Here is a compilation of pdfs I have found on my crochet journeys to help those that want to learn how to crochet!
One with uk terms: Learn to Crochet, Crochet Guide
Us terms: BasicCrochetStitches, crochet terms, crochet handbook
Crochet and Tatting Guide: crochet tatting
Chart Symbols: crochetchartsymbols
Irish lace: irish lace vintage