We are going to review good learning and support material for you, separating the wheat from the chaff. Please note that I get commissions for purchases made through links on this post
Here is our first recommendation –Schluß mit den typischen Fehlern (affiliate link) – we made an interview with the author Dilyana, watch it here:
Download and buy the book here, it’s a definite recommend from our side:
Schluß mit den typischen Fehlern by Dilyana Hunley (affiliate Link).