hi there i want to create bar graphs from data i have stored in my database using php and mysql.

what i would like the bar graph to show is the employee types which are booked thoughout the previous year. months and number of employee type will need to been shown on the bar graph and also the different employee type represented by different colours as the bar.

now i have know idea on how to do this although i have heard of GD library but do not know how it all works. i have downloaded the GD tool but i can not install it.

I was hoping that someone can give some guidance.