OF HOW TO USE A MI'FIT!: Go to nearest watch store and look for one and once you have one go home install the Mi'Fit app pair them up (there should be some very small writing on the inside it will track your sleep and your steps and loads of other things!
If You can't find one in town or the city order it online at mi band.com. Theres more bands, in this picture there's a mi fit pulse a.k.a. mi band 1 S and the mi band 2... https://mi.com