Just finished the book as a total beginner programmer. Finished nearly all of the challenges, I think I only skipped 3. Some parts had me stuck for a week but refused to give up.
Big thanks to the authors of the book, I will be able to use these skills for a long time and transfer the concepts to other programming languages and development frameworks. I am really eager to start my journey as an android developer, I guess it’s all up to me now.