How to install the handle: ?The telescopic handle: When you stretch the handle to the place, you can rotate it to lock it by turning it counterclockwise. The handle insert into the connector above the sweeper , Then you can rotate it to intensify. ?The threaded handle: Please refer to the picture to install the handle How to use it correctly: ?Does this broom need electricity? How to work? Does it need to install? ?This broom adopt the latest advanced technique,No Electricity,No batteries.Push it forward ,it can automatically collect the trash into the gabage bin.Easily to use and no need to install. What kind of ground fit for this sweeper?. This broom is fir for the hardened ground to use(wood floor,tile floor,marbled floor)?Don't use it to sweep Uneven ground (Carpets,Foam Pad,etc).Not suitable for sweeping the stairs yet. ?Can the broom sweep all the places?Does it have dead corner?. Yes,it has a dead corner,the broom can clean 98% places except for the narrow palces which need to.Every cleaner has its dead corner. Can this broom sweep all kinds of garbage? This broom is designed for the family.Mainly aimed for the hair,peanut shell,melon seeds shell,scraps of paper,rice,granular garbage.All of these can be cleaned up.Like Mineral water bottle can not be sweep into the garbage bin.And this is not a vacuum cleaner.Also cannot sweep the the tiny dust and heavy tile or stone. Is this broom too noisy when it is working? This broom dosen't have engine.Only have the sound of roller rolling on the ground.If you push slowly,it will be almost silent. This broom can be twined hair? ?The sweeper may be enwinded by the long hair.But don't worry .Pull the hair out of the brush by hands.