This first chapter of the HP saga is of great quality!

The first thing to know about Harry Potter is that it is a saga in 7 games (7 novels), and not a novel and 6 suites. So this first volume corresponds in some way to the opening words of the plot.
This first volume alone does not allow to judge the complexity of the story and depth of the characters, it will be the third novel for that, but we are already facing a very well written book, in a highly visual style (the author uses many comparisons and metaphors as a description, it uses including many animal comparisons during physical descriptions and gestures of the characters, rather reminding the writing style of Charles Dickens), with a subtle humor but said, a vast gallery of well-sketched characters and a gripping storyline that will find its resolution at the end of volume while being melted into a deeper plot that will grow throughout the saga.
The author also shows that first book in the scope of his imagination through this world of wizards living on the margins of contemporary UK and it describes very practical, coherent and plausible. This is the beginning of a whole mythology.

"Harry Potter and the Sorcerer's Stone" is an accessible read for the young, but still very nice for adults (nice in that it could be read many times, especially after reading the saga in its entirety, for identify all the subtleties and clues scattered by the author and unnoticed during the first reading).