Here is a broad outline. I highly recommend reviewing this section on multicam– and/or invest ina tutorial (of which there are many that are excellent).
Import the clips from both cameras into your event. Select them in your event browser and to make a multiclip:
In the inspector make sure that the angles and cameras are uniquely identified.
If you have sound on both cameras you can probably sync automatically; if you have a third sound source, you can sync to that as well. If you don't have sound on one of the cameras, you'll have to do this manually.
This creating the multicam process usually works very well – even with breaks in recording.
Once the multiclip is made, bring it into a project timeline, open the angle editor and start cutting.