Guía rápida de los adjetivos en español: uso, concordancia de género y número, posición en la oración, tipos y ejemplos para describir personas, objetos y lugares con precisión.
Quick guide to Spanish adjectives: usage, gender and number agreement, position in the sentence, types, and examples for describing people, objects, and places with precision.
Suggested Reading

English File by Unknown (Oxford University Press series)

Practical English Usage by Michael Swan

English Grammar in Use by Raymond Murphy

English Grammar Workbook: Simple Grammar for Non-Native Speakers by SIMPLE English Language School

Essential Grammar in Use by Raymond Murphy

New Concept English by L. G. Alexander

Oxford Practice Grammar by Norman Coe, Mark Harrison & Ken Paterson

The Blue Book of Grammar and Punctuation by Jane Straus