Here is an example of a basic suit. It's simple yet classy. Do not forget the tie clip! A floppy tie is enough to bring your whole look down. Also, a fitted shirt is key. You don't want to look like you are swimming in your clothes.
Incorporating light denim is a surefire way to create contrast within your outfit (a key to dressing well). We recommend tossing yours on with a dark sport coat or blazer for a comfortable and casual office look.