It is no doubt if the Harry Potter series are famous and become a phenomenon. You can find everything in the book: adventure, action, magic, humor, breathtaking, evil, dark art,... Magnificent. 
 The story started in England, where professor Dumbledore, McGonagall and Hagrid took an orphan baby with a scar that looked like a lightning bolt and left it in front of the door. Of course, I don't understand what was going on. 
 10 years later, Harry Potter grew up and lived with a terrible, dreadful family, his uncle Vernon and aunt Petunia, who was really despised Harry, and forced him to sleep in a cupboard. They had a child, Dudley, a bully, who always bully Harry. However, things started when Harry accidentally let a snake at the zoo crawl out of the cage. He realized he could talk to snake, and didn't know why he could make the glass door disappeared. The next day, there was a strange letter send for him and he was really surprised, 'cause he never had friends or any relatives. But he couldn't read the letters, 'cause his uncle burned it and tore it. There were more and more letters were send to him, until one day, letters were appeared everywhere. 
 The family, except Harry, was so scared that they decided to move to a lonely island. At night, a big man named Hagrid( lol I like him), bursts through the door and gave him a birthday cake, and told that he is a wizard, and gave him a letter told that he will go to Hogwarts School of Witchcraft and Wizardry. He learned the truth about his parents were killed by a Dark, Powerful Wizard named Voldemort - who tried to kill him but couldn't and instead left a scar on his forehead and died. There were people who still think that Voldemort was somewhere and tried to have his life back normal. 
 Harry went to the Diagon Alley and Gringotts Wizarding Bank to inherit a lot of gold coins from his parents. He then went on a magical train, that will lead to Hogwarts and soon made friends with the Weasleys - another wizard family, especially Ron, a red hair boy, Hermione - a smart girl who came from a Muggle( those who don't have magic) family. He also made his first enemy- Draco Malfoy - arrogant and prejudice and rich with his sidekick - Crabbe and Goyle. 
 When the train arrived, and the new students are allocated to House by the Sorting Hat. 
 There are 4 houses: Gryffindor - brave, courage, Ravenclaw - creative, intelligent, smart, Hufflepuff - hard work, loyalty, fair play, and Slytherin - ambition, cunning. 
 Harry, Ron, and Hermione were sorted in Gryffindor, while Malfoy and his friends were sorted in Slytherin - only for pure blood. 
 He studied at Hogwarts and discovered a lot of things. 
 First : there was a monster at school and unfortunately, it was released in Halloween. 
 Second: his DADA teacher is a traitor. 
 Third: Voldemort is trying to get his life back by stealing the Philosopher's Stone. 
 Is Harry going to win? Yes, of course, if not there will be no sequel. 
 The rest you should read. 
 I'm not going to spoiler. 
 EVERYBODY - EVEN ADULTS SHOULD READ THE SERIES!!!