Or, take Sepulveda Blvd. North to La Tijera Blvd., turn right and take La Tijera all the way until it turns into La Cienega. This is actually the BEST and fastest way, less traffic, most direct. But you have to make a couple of turns, big deal, follow the taxi's!
Head East you literally can't miss it..Truth, I know that's how we do it but,I don't think that is a good route for new first time tourists....
http://www.mapquest.com/directions/ I usually use this site for directions. If worse comes to worse you could use the directions and the trip tic in your car. This sites directions are usually accurate to .1 miles
Follow the signs. Literally.
The airport exit drops you on Century. Take Century east until you hit the 405. There are signs as you leave the airport and all along Century.
You can also make yourself a Yahoo Map and bring it with you.
Stop by one of the rental car counters. They'll give you a map.
Follow the signs, but if you don't feel comfortable, look it up on Google Maps. They give directions.
Really you just follow the signs.
You'll want to go North on the 405 or Sepulveda Bl from the Airport...Now, the rental car places aren't too close to the Airport so I'd suggest asking them how to get to BH from where they are (I assume that since you're asking this you're planning to rent a car). PEACE & Hope you enjoy your stay.
Hope it helps