How do I take apart the axle and freehub on this bike
They both look pretty standard to me. Normally you remove the lock nut and cones from one side. The bearings should be visible and fall out (careful to catch them all.). The axle should then just push through to the other side. If you can see the bearings (or they fell out), a gentle tap, with a light hammer may be needed (although i cannot imagine why) to dislodge the axle.

With the rear wheel, remove the lock ring and cone from the left side (non-drive) and push the axle through (again, watch the bearings).