This is also a special manga chapter all about lee,  from the series Rock Lee no Seishun Full-Power Ninden (Rock Lee’s Springtime of  youth):
They are a list of four chapters, here is the third one called :
Copy Ninja Rock lee?! :
In this chapter, lee decides to become a copy-ninja like kakashi

This is also a special manga chapter all about lee,  from the series Rock Lee no Seishun Full-Power Ninden (Rock Lee’s Springtime of  youth):
They are a list of four chapters, here is the third one:
Rock lee Vs Neiji Hyuuga!
Lee decides to challenge Neiji

This is also a special manga chapter all about lee,  from the series Rock Lee no Seishun Full-Power Ninden (Rock Lee’s Springtime of  youth):
They are a list of four chapters, here is the second one:
The Huge Pitter-Patter Attack Plan of Love!
In this chapter lee tries to make Sakura fall in love with him by using [...]

This is a special manga chapter all about lee,  from the series Rock Lee no Seishun Full-Power Ninden (Rock Lee’s Springtime of  youth):
They are a list of four chapters, here is the first one:
The ninja Rock Lee:
 

The revelation of kakashi’s True face:
Is a 5 pages  manga-omake included with the third Naruto Databook.