Hi,
For keyframes I suggest you these videos: https://www.youtube.com/watch?v=j9xb1Rzn2Sg
& https://www.youtube.com/watch?v=Mc--QszFCFU (If you do not have much experience, I recommend you watch the entire series of Mr. Eko.)
There are some filters concerning audio like Audio Dance Visualization and Audio Light Visualization. If your video and audio tracks are separate, you have to export them as a video to get any effect.