Getting around in Bangkok is simple enough but regardless of your reason for travel, the easiest way to get around in Bangkok is the BTS (skytrain) and MRT (subway). Unfortunately, the lines are not very extensive, so for some destinations the best way to travel in Bangkok is by taxi cab. Below is a map of the train systems and below that is a map of central Bangkok.
Note: BTS and MRT are operated by different companies, so where they are connected, the names of the stations (in basically the same location) are different. Watch out!
Map of Bangkok: Have an idea of where everything is!
How to get to Mochit Bus Terminal: http://wp.me/p1Txsb-9V