The bearings on both wheels are housed in the hubs. Each axel is essentially a long bolt, and has no bearings. The process for wheel removal is covered in the on-line manual; plus check out YouTube videos to see the process and helpful hints.
Use the center-stand and remove the rear tire. To remove the front tire, you can use the center-stand again but you need to add weight to the rear to elevate the front wheel.
Tire removal from the wheel is in the manual as well, but again, seek out YouTube for examples of how to do this successfully and not pinch (ruin) the tube on install.