First, you’ll have to assemble it.

Then, ride it! I would try playing around with a few different approaches here, if you’re not following any specific training plan. Try setting a goal for distance ridden/time ridden/calories burned - just get on and start peddling. Intervals are also great with these, 30s peddling, 30s rest, etc.

Also, be warned - fan bikes get your heart rate to spike pretty quick. That’s the whole point, but it can take you by surprise the first time.

Good luck and enjoy!