Near to a few BTS Stations you can go to a Tourist Information Center and ask if you need some information for your tours.
The Tourist Information Center is a BTS SkyTrain service, they are telling you usuful Information when you want to visit attractions in Bangkok, how to get there. They are also selling you the necessary One-Day River Passes, Package Tours, Entertainment/Show Tickets and Dinner Cruise Tickets or if you want, they also selling some souvenirs.
The Tourist Information Center at the BTS Station Saphan Taksin seems the biggest office of the current three available offices. You can visit the Tourist Information Centers 7 days a week and get a lot of useful Information for your planned tours, or if you are not sure what to do in Bangkok, you can buy a ticket for some tours here too.
The BTS Station Saphan Taksin is a central point for start some interesting Tours! If you like to visit a temple, its not far away, you can walk a few minutes to the Wat Yannawa temple. For others there is the possibility to make an Express Boat Tour, just for a nice tour on the Chao Phraya, or start your Tour to the Royal Barge Museum, or the Grand Palace.
Some modern BTS Trains has a digital board for the Stations inside the trains. On this one you can see, that at the BTS Station Nana is planned another Tourist Information Center. At this moment it is not mentioned on the BTS Skytrian website. We will follow it.
