I have just bought the Thomas the tank carry case .. I just need all the little trains that go with it ..help.?

Where abouts will i get these trains from do you know?! The carry case was from woolworths, Im not sure if theres any certain trains i have to get.. If anyone knows a online website that would be so great =) thanks. I have just bought the Thomas the tank carry case .. I just need all the little trains that go with it ..help.?
Toys R Us has lots of Thomas trains. Right now the are having a special where if you spend so much on Thomas trains, you get the big train track for free.I have just bought the Thomas the tank carry case .. I just need all the little trains that go with it ..help.?
There are several different types of trains and they all fit on only their own specific tracks. They all vary in size. You would have to read the packaging that came with your carrying case to see which trains fit in it. Could be track master, take alongs, wooden railway system, etc...