Need support for pseudos

Hello Sarah,
myself vinay, i am writing this for need your help in pseudos project.
I was your follower on yputube. but you removed the videos. 
Can you please share that recorded video for "Lets build an OS series"?? 
Your explanation was very deep and i wanted to learn  it. 
Please please share the playlist for the same.
I REQUEST YOU! 

Thank You.