Profile and search bar related questions.

HI, I have downloaded your theme, its a very nice and easy to use theme. I have two quries: 1-How should i add more fields to user profile area? e-g I wanted user to add their biography, their skills in on profile page. But right not its only showing name field there.

2-I also wanted a functionality that if someone tries to search any work in main header search bar then system should search all the content and bring out search result. e-g if user type themeforest in top header search then system should search the key phrase themeforest in user profiles, groups, forums etc and bring the any related results found.