Magical Me is the name of Gilderoy Lockhart's latest book. In Harry Potter and the Chamber of Secrets, Chapter 4, Moment 3 , the book is displayed in the Flourish and Blotts store window. This is also where it can be collected.
From the Story
"Magical Me is Gilderoy Lockhart’s autobiography."
"Gilderoy Lockhart’s autobiography, containing highlights from a life dedicated to the eradication of the Dark Forces."