The Personal Notes space in Annoto is 100% yours, for you to summarize, bookmark and highlight everything you want in the video.
If you want to add a personal note, all you have to do is start typing in "Write a personal note..." section. The video will be automatically paused (so you won't miss anything while writing).
Same as in the Comments Space, every note is time-tagged, meaning everything you write is always in the context of the video. Clicking on the time-tag of each comment takes to the exact moment in the video it refers.