Basically you just put the back of your phone onto the wireless charging pad that is turned on, then it should be charging.
If you want fast wireless charging just make sure you wireless charger and adapter supports it and that the option is turned on in Device Care>Battery settings.
Some cases can. Some cannot. Follow the steps given in this comment thread and put ur phone on the wireless charging pad. If can means the case doesn't disrupt. If cannot means u need take off the case.
Some cases with steel plating or has a magnet mount may disturb ur wireless charging.
