We present specific methodologies for those who want to start a startup but are hesitant due to vague fears and a lack of knowledge on how to begin. Everything you need to know about startups, taught by a practitioner who worked at Naver, Kakao, and Yahoo and has experience founding two companies! From item selection to team building, writing business plans, establishing business models, and attracting investment! We deliver vivid know-how learned directly from the field. Only a prepared startup can avoid financial ruin.