At the beginning, you should sell all the scenery and footpaths to get some extra cash. Build a good Wild Mouse or build the Steel Squeak pre-design. Build an Information Kiosk, Merry-Go-Round, and a good thrill ride to get you started, then raise the price to $20. Make sure the queue line for the Wild Mouse is very long. Next, you should take a small loan out and build a Wooden Roller Coaster. For the rest of the scenario, you should have no problem filling in the gaps slowly with the large variety of rides. If you do have a money problem, take out small loans, but if you build plenty of rides and eventually increase the entrance fee to around $50, you should have no problem.