Healey's textbook has pros and cons - I am a big fan of the way in which each chapter is organized (where each lesson starts out with unfamiliar Syriac text which is explained before the main grammar lesson is presented), but I found that the lessons do not cover many topics in sufficient detail (which admittedly may be the intent of the author). While I would love for Healey's immersive approach to be replicated in other introductory grammars, as it stands, the learner will need to go on to less savvy but more complete teaching grammars, especially Coakley.