A possible concise summary is:
The user is a YouTuber who reads six books written by other YouTubers in 12 hours and shares his opinions on them. He finds most of them boring, problematic or poorly written, except for Jake Paul's book which he surprisingly enjoys. He also promotes his own book about university advice and compares British and American YouTuber books.
Here are some possible key facts extracted from the text:
1. The text is a transcript of a YouTube video where the speaker reads different books written by other YouTubers for 24 hours.
2. The speaker's name is Jack Edwards and he has published his own book called The Universe, which is a guide to university.
3. The speaker reads six books in total: How to Be a Bawse by Lilly Singh, Self Health by Miranda Sings, A Work in Progress by Connor Franta, You Gotta Want It by Jake Paul, Adultolescence by Gabbie Hanna, and I Hate My Selfie by Shane Dawson.
4. The speaker gives his opinions and criticisms of each book, often using humor and sarcasm.
5. The speaker says that the Jake Paul book was the best one he read and the Miranda Sings book was the worst one.
6. The speaker finishes the challenge in 12 hours instead of 24 and compares the British and American YouTuber books he read.