This book is a brief but comprehensive introduction to the issues of interlanguage or learner language in second language acquisition This is intended for a broader audience of second language learners practitioners teachers and researchers Therefore this book is suitable for those who have interest in second language acquisition teaching and learning as well as second language acquisition research The goals in writing this book are to provide a basic knowledge about English as a second or foreign language how second language is acquired how second language learners proceed or develop their second language Another goal of this book is to provide stimulation to the interest in studies of second language acquisition or learning Particularly this book tries to provide several questions dealing with second language This book is a brief but comprehensive introduction to the issues of interlanguage or learner language in second language acquisition This is intended for a broader audience of second language learners practitioners teachers and researchers Therefore this book is suitable for those who have interest in second language acquisition teaching and ...learning as well as second language acquisition research The goals in writing this book are to provide a basic knowledge about English as a second or foreign language how second language is acquired how second language learners proceed or develop their second language Another goal of this book is to provide stimulation to the interest in studies of second language acquisition or learning Particularly this book tries to provide several questions dealing with second language