I can't add much to the how-to, it's been covered pretty well.
However, both DH & I have noticed that once we get to work on bikes, we are happier and work smarter, and are all-'round better people. The person who shares the small office with me has noticed, too.
Do it for your co-workers.
Also, keep an eye out on the bike for alternate routes that you just don't/can't see when in a car. Watch for things like bike tracks through grass into a parking lot, underpasses, and stuff like that. Some are kinda-sorta semi-legal, but they work. DH cuts through an apartment complex, I (and other bike commuters) cross the busiest street in town at an intersection that you just can't get across in a car. It works for a bike, though. A person just doesn't SEE these things through glass.
Getting to work on a bike is a tremendously liberating experience. Go for it. It will become the best part of your day. Really.
Give big space to the festive dog that make sport in the roadway. Avoid entanglement with your wheel spoke.
(Sign in Japan)
1978 Raleigh Gran Prix
2003 EZ Sport AX