Update 24.1.21

Hi guys, I spent 2 hours rearranging the chapters of the book. I felt like making a chapter too long might not be much of a good idea, so I decided to spilt most of them. In case anyone is confuse. You shouldn't be anymore. The latest chapter is Tag along. and everything is basically the same but just in different parts. The book is going through some heavy reconstruction and I hope you all bare with the changes. Thank you.