The information contained within your new Brother printer's box contains all the steps that you need to follow in order to properly setup your wireless printer. However, in the case that the documentation has been lost, YouTube will be your next best friend.
Brother QL-810 Setup - Driver Installation Process
You will need to connect your printer to a laptop or desktop computer via the USB cable that was supplied with the printer in order to complete the setup process as easily as possible.
Download the full Brother QL-series software package for your operating system from: https://support.brother.com/g/b/downloadtop.aspx?c=us&lang=en&prod=lpql810weus
Here are some potentially helpful videos that will help you on your quest to setup your wireless Brother printer:
Windows Operating System Driver Install:
Apple/Mac Operating System Driver Install:
After your Brother printer has been setup on the wireless network, follow the next steps that are laid out in the "Wifi Enabled Badge Printer" article.
Assign a Static IP Address
To ensure the printer remains connected to the iPad at all times, we recommend assigning a static IP to the printer. If you do not set a static IP, the Visitor Aware application will need to be reconnected to the printer each time a new IP address is assigned.
See "Change the IP address of the label printer" for details on setting a static IP for your Brother QL-810W or Brother QL-820WB.