Here is how to make a roller coaster......
Hope you enjoy
Step 1: Make the Beginning and End
The first step is to make where your roller coasters beginning and end will be. This should not use power rail.
Step 2: Up and Down
Make the roller coaster go up and down by using power rail. I made mine in pocket edition so I didn't need redstone to power the power rail. You will need to use redstone in full edition.
Step 3: Thrillers
Make some tracks to a glass tube and some leading out from the bottom ( see picture for example). Keeping in mind not to drop to far in survival. Gaps in the track are also fun!
Step 4: Space
Cut some bedrock for a nice space view (see picture).
Step 5: All Aboard
To let some villagers or animal take a ride push a cart into them and they'll get on.
Hope you enjoyed this instructables. If so please like vote and follow!
And feel free to ask me any questions!