I'm also an introvert. Check out the following books:
Influence: The Psychology of Persuasion by Robert Cialdini
The Charisma Myth by Olivia Fox Cabane
48 Laws of Power by Robert Greene
I liked them and used them to overcome some of my introvertedness (not that it's possible to entirely overcome it).
Influence: The Psychology of Persuasion by Robert Cialdini
The Charisma Myth by Olivia Fox Cabane
48 Laws of Power by Robert Greene
I liked them and used them to overcome some of my introvertedness (not that it's possible to entirely overcome it).