Read the description of the next race to decide how to build your bike. (In the building screen, you can click HINT for more tips.) Then click each category, scrolling through the options using the arrows. Click your selections to add them to the bike. When you're ready, click RACE. When the race begins, hold down the Up arrow. If you've built your bike well, you'll beat your opponent to the finish line and win dough to build an even better bike for the next race!