Reddit reviews Schritte international 1. Kursbuch + Arbeitsbuch mit Audio-CD zum Arbeitsbuch und interaktiven Übungen

https://www.amazon.com/Schritte-international-Kursbuch-Arbeitsbuch-interaktiven/dp/3190018510/ref=mp_s_a_1_2

If what you want to achieve is A1 and nothing beyond, you best bet would be getting one of the many course books:

• Schritte (http://www.amazon.com/dp/3190018510/). You may simply ignore the 1 stars review as they're irrelevant.
  
• Lagune (http://www.amazon.de/dp/3190016240/) and a lot more others. Actually it doesn't really matter which one you pick. Any one of them is sufficient.
  
  A arguably better alternative would be the free online course offered by Deutsche Welle (http://deutschkurse.dw.de/KursPlattform/WebObjects/KursPlattform.woa/wo/6.1). Do register and try it. Really valuable resource. Together with Deutsch – warum nicht? (http://www.dw.de/deutsch-lernen/deutsch-warum-nicht/s-2163) you can go far. (In case you didn't realise already, both the sound files and pdf notes can be found on the right, featuring four series.)
  
  Maybe the only problem you would encounter is speaking. The speaking test is actually like this (https://www.youtube.com/watch?v=aGNd-6pDkEI), and you may panic if you don't already speak in German for a several hours. Try to find someone who speaks German and wants to do a language exchange with you. (http://www.language-exchanges.org/) is one of them. You may as well find one on Reddit.
  
  By the way, if you really want to have a strong command of German sooner or later, there are some good, though popular (popular doesn't always mean bad) books for foundation, apart from your already awesome German for Reading:
  
  
• German: How to Speak and Write It (http://www.amazon.com/dp/9650060359/)
  
• The Everything Learning German Book (http://www.amazon.com/dp/159869989X/)
  
  If you insist on getting a grammar book, a nice start would be:
  
  
• Essential German Grammar (http://www.amazon.com/dp/0340741899/)
  
• English Grammar for Students of German (http://www.amazon.com/dp/0934034389/)
  
  And eventually you may want to take down the boss:
  
  
• Hammer's German Grammar and Usage (http://www.amazon.com/dp/1444120166/)
  
• Duden 04. Die Grammatik (http://www.amazon.de/dp/product/3411040483/)
  
  Finally I recommend you to take a look at my favourite reading material when I started, Studien und Plaudereien (http://www.gutenberg.org/ebooks/22160), freely offered by Project Gutenberg.