Just saw the request for syncing tips. Depending on the footage, I can use a visual cue or audio.
For video, I will watch for something unique, like a photo flash, or someone touches their hand to their head, or even someone's footsteps, if I can see the same thing in both cameras. I will find the same frame in both clips and Razor cut at that point then slide the clips over to line up together. After lining them up, I can then grab the cut end and restore the rest of the clip that had been cut.
For audio, just open up the audio waveforms and drag the tracks down to make them larger, and of course zoom in as needed to see more detail in the waveform (+ sign on keyboard) then I just match the waveforms between the two clips!
You'll usually find that the two waveforms may not match exactly, because the editing accuracy is limited to the frame rate, such as 1/30 of a second. So the peak on one clip might be right on the frame marker, but the other one falls somewhere in between and if you try to move one way or the other, it is early or late then! What you can do is right-click the clip and Unlink audio from video, then there is a little dropdown menu at top right of Sequence window, and there select "Audio Time Units". This changes the accuracy of the timeline from 1/30 to 1/48000 to match the audio sample rate! Now you can zoom in further and then move the audio clip independently of the video in very tiny increments to exactly match the other audio clip. So if using both audio clips in the final mix, you don't end up with an annoying echo. I recommend moving the audio on the wider camera, leaving the close-up camera's audio synced to video for best lip-sync obviously.
Once audio is adjusted, then disable Audio Time Units for editing the video again using frames.
Thanks
Jeff Pulera