Sticky note: Today I have returned to update the PDFs of the blog, I hope you can now download and view them without problems. I had to convert the content to image format, so you don't give more problems with text and fonts, and so now the files are slightly larger. But finally see and print correctly. Or I hope so!
If anyone has any problems, please don't hesitate to comment. Any help is appreciated, and all corrections teach me to do better next time. So thank you for appreciating my work and for helping to improve it.