I am starting this video at 2:55:15 with the testimony of Retired Army Colonel Phil Waldron, who was an information warfare officer and is an expert on automated voting machines and how to hack them for malign purposes. I recommend starting with his testimony because he has expert knowledge and explains his findings very clearly.
There are many other important witnesses in this video. You can click anywhere and find someone saying something interesting. Due to the grave importance of this election, all of us should do our best to be as informed as possible. I find much of this testimony riveting.