Although research into language learning strategies (LLS) has flourished over the last several decades, some areas have remained blatantly neglected. This evaluation surely applies to grammar learning strategies (GLS), defined as actions and thoughts that learners draw upon to better understand grammar structures and to use them in different contexts. Research in this area is scant and it has for the most part focused on the identification of GLS employed by second language learners in various settings. The present book offers an overview of existing research into GLS against the backdrop of the broader field of LLS. It also reports a study that investigated the effects of strategies-based instruction targeting GLS on the use of these strategies and the knowledge of explicit an implicit (automatized) second language grammar, also taking into account the role of selected individual difference factors. Based on the results, pedagogical implications are provided and future research direction are considered.