Blender video editing basic

1. You can cut the video using shortcut key "K" (soft cut) and SHIRT + K (hard cut)
2. You can drag the entire screen using middle mouse button
3. right click the sound drag, tick the box "show waveform" this is important so you know when the sound show up
4. if you would like to hear sound while you drag, on your timeline, click "PLAYBACK" -> tick "AUDIO SCRUBBING"
5. Say you now place 2 video together both starting at FRAME 0, if you want video 1 to show on bottom left, while the video 2 on the entire screen,
-> select video 1, ADD -> EFFECT -> TRANSFORM, then on the property panel, blend-> overdrop