Sky Train in Bangkok

The BTS website is an excellent interactive site which will even show you what are the attractions that are near a station. BTS is not cheap. If you have company (2 or more persons), it is always cheaper to go by cab, except perhaps the trip to Cathuchak (aka JJ) market. For that, my experience shows me that it will usually come up to about 100B, beacuse the driver will take you for a ride. 100B may not be that bad, it is the fact that he took up your prime early morning shopping time! 10:00 am is not as HOT as 11:00 am!

To travel from Chinatown/Grand Palace to town, the river taxis are a great idea. Again, you will be spared the ''ride'', the jams and you get to enjoy travelling down the famous river. Check the Chao Phraya services here.