Saahi & Sudheer by Yogita Warde is a magnificent book.
This was the first Hindi book I read. I really enjoyed reading it and it was a wonderful experience to read this one.
Sudheer was a simple person who did not have any friends. He was also a topper of his class. Sudheer was introvert and his parents were worried for his nature. Soon a girl namely, Saahi came to the society of Sudheer. Soon Saahi and Sudheer became good friends. Saahi changed Sudheer and they started spending time together. Sudheer was good at painting and Saahi wanted to become a writer. The story takes turn when both Saahi and Sudheer are separated. Both of them part their ways. Later on, Sudheer becomes a big artist, Saahi and Sudheer do not have any connection but, they meet each other after several years.
The book is very descriptive and the author has portrayed some events and incidents really well. 
To know more about Saahi and Sudheer, why they were apart from each other how they met again after several years, you should definitely read this Hindi Book. I loved reading this book. Overall, it's an impeccable book in Hindi language and is recommended to beginners, looking to read Hindi books.