explanation about a sentence

[ehsanshekari]

You’ve spent your hard-earned money and purchased this book, so you undoubtedly know the enormous benefits of using PHP, Apache, and MySQL together to create your Web site. But in case you found this book on your desk one Monday morning with a sticky note reading “Learn this!,” this chapter looks at the basics of PHP, MySQL, and Apache to show you what makes the “AMP” combination so popular.


I can't understand what does the sentence in bold want to say.
and what does in case mean?

i think it says u know the benefits but you have to read this chapter.​

 

[lokeshrao101]

i am not a teacher but still i can tell you what my interpretation is ....

when you buy something spending your hard earned money you try to utilise that thing to its max.

but when you get it without doing so much of hard work you dont really concentrate on that much. you take it lightly

here it says if you spend your hard earned money and purchase a book of php ,sql ,apache to create a website you read it thoroughly . But what would be the case if you would have got this book without spending your own hard earned money ... what if you would have got the book on your desk one day .that has been given to you by your parents or friends, would you show same amount of interest in reading that .

hope this might help you .

 

[Anglika]

You’ve spent your hard-earned money and purchased this book, so you undoubtedly know the enormous benefits of using PHP, Apache, and MySQL together to create your Web site. But in case you found this book on your desk one Monday morning with a sticky note reading “Learn this!,” this chapter looks at the basics of PHP, MySQL, and Apache to show you what makes the “AMP” combination so popular.


I can't understand what does the sentence in bold want to say.
and what does in case mean? In the event that one morning you find this book on your desk

i think it says you know the benefits but you have to read this chapter to see what makes the AMP combination popular..​

.