Are you an educator? Feel free to contact me for access to source files and planning documents, for advice about the content here, or to offer feedback and suggestions for improvement.
As an educator myself, I refrain from providing source code to my students to ensure they experience the coding process. Tutorials only go so far in the training process, the next stage is for students to challenge themselves to extend and add to their solutions. After all, software development is more about problem solving than it is about coding.