I've done over 10 000km on zwift. It's a good platform. Great if you're not comfortable riding outdoors, or like to supplement your outdoor riding due to bad weather etc. All you need is a bike, a smart trainer of some kind (kickr, tacx etc) and the right cassette to fit onto the smart trainer(the group of cogs that are on your back wheel, i.e your bike has 10 cogs on the back wheel, get a 10 speed cassette for the smart trainer). You download the Zwift app either on your laptop, your phone or if you have something like apple TV you can get it on there. I've also used wahoo's alternative called Wahoo Systm, there are others called FulGaz , Trainer Road and Rouvy. There's no wrong answers here as to what platform is best. Zwift probably has the largest user base, and is the most "video-game" like experience. You can ride with friends who also have zwift and you can choose between a free ride around the zwift world, doing a virtual race with other Zwifters or doing a training program to target specific goals. You can YouTube something like "my Zwift setup/ideal Zwift setup" and you'll get hours of videos explaining it properly. The other platforms have their own advantages as well, some use real footage instead of computer graphics. You can often find smart trainers on marketplace or the like if you're not 100% on the idea and don't want to spend too much money, just get them to show you it works before you take it home. Personally I love it, i'm a keen cyclist with a young family so it's a great way to get some km's (miles) into my legs when life or the weather doesn't let me get outside. any newish smart trainer should work with Zwift. What happens is the bluetooth connection on the trainer talks to whatever you're running the Zwift app on and transmits the power/cadence data to your device