Step 1:
Download the Grabbit Chrome extension from the chrome store:
Link to it here: https://chromewebstore.google.com/detail/grabbit/madmdgpjgagdmmmiddpiggdnpgjglcdk?hl=en-US&utm_source=ext_sidebar
Step 2:
In Grabbit set up the keys you want to be able to copy al the videos. I go with (Option + Left click). I then drag my mouse over all the creators videos and it automatically copies all the links.
Step 3:
After copying all the links, download Websync for NotebookLM and pin it to my extensions. Link to it here: https://chromewebstore.google.com/detail/notebooklm-websync-full-s/hjoonjdnhagnpfgifhjolheimamcafok?hl=en-US&utm_source=ext_sidebar
Step 4:
After downloading Websync, open it and paste all of the URLs into the extension to upload it to your NotebookLM workspace.
Step 5:
You can now talk to all of your favourite creators videos by asking any questions about any topic you want.