Pretty much what it says. If you are an WE customer and like motorbike racing you can get 3 mths free access to the BT sport app. You need WiFi of course. You can watch on your TV if you have a smart TV or your lap top if you can do those techy things.
I only like Moto GP. Season is March to November. After the three months it's £5 per month. Cheaper than paying for the channel or Moto GP pass.
Biggles pays for BT Sport for the season and casts it to the TV. He'll be back in August so it's only about £20 I will have to pay for the season. £100+ on MotoGP app.