Termify's German 101 is an essential book for learning German, whether you're beginner or advanced it will help you save time and effort by focusing on specific 33 separated topics so you can pick your interests, these topics are: Introduction & Greeting, Travel, Love & Relationships, Clothing, Kitchen, Professional, Sports & Hobbies, Call Center, Plumbing, Carpentry Workshop, Agriculture, Textile, Blacksmith shop, Politics, Economics, Mechanic Workshop, International Trading, Real Estate, Engineering, Law, Medicine, Tax, Accounting, Environment, Super Market, Biology, Chemistry, Physics
Geology, Architecture, Diving, Interior Design, User Interface & User Experience.
Also it will strengthen your vocabulary with it's 1400 most important words section!