If you're used to cycling outside, moving your cycling indoors can feel a bit strange at first. The scenery is not as exciting, and you don't get to feel the wind rushing against your face. However, there are ways to make indoor cycling more effective, interesting, and enjoyable.
Bike on stands, not on a stationary bike
Riding a stationary bike is better than nothing. But if you want a feeling that's more similar to the one you get when biking outside, you should instead invest in stands for your normal bike.