In view of tremendous development in the area of Biotechnology, Algal Biotechnology is a fascinating field that has attracted many researchers in the past two decades. Considering its potential and future applications for human wellbeing, studies related to basics and applied aspects of commercially important microalgae need to be focused. Keeping this in mind, comprehensive details starting form culture collection to metabolite production in microalgae need to be addressed and hence, our book "Applied Algal Biotechnology" will definitely provide valuable information and exciting results-based techniques that will easily guide young researchers, PhD scholars and also UG and PG students. In the present research scenario, every plant sciences laboratories has a separate unit for microalgal biotechnology to better understand the basic concepts that make microalgae an alternate model system that can compete with Arabidopsis thaliana. The strategies starting from isolation, identification, medium preparation, culturing condition, metabolite production, novel gene isolation and its expression pattern under the influence of different biotic and abiotic stress condition, genetic transformation in homologous/heterologous host etc., are very much essential for the fruitful execution of research.