The section "Recap of payment types" is missing in the table of contents for chapter 10. It should be right before the "Block limits" section.
The text "... trying to find a my place in the Bitcoin community ..." in the third paragraph should read "... trying to find a place in the Bitcoin community ..."
In the last paragraph, "... can encrypt messages that can only the public key can decrypt" should be changed to "... can encrypt messages that only the public key can decrypt". Thanks to Dan Berglund.
The first sentence of the last paragraph mentions "pubic keys." The author should have kept his mind on the subject and written "public keys."
In the list of wallet duties, "Back up private keys" should be all italics. The trailing s is not.
The header "Public key multiplication" should be one level down under the "Public key math" header. The other headers under "Public key math" should remain, so that "Public key multiplication" is on the same level as for example "Why is this secure?."
The bottom left annotations misspells multiplication as "multipilication".
In the section "Verifying the partial merkle tree," the reference to figure 2.28 is wrong. It should reference figure 6.28.
The annotation "Qi abandon her branch." should be "Qi abandons her branch.".
The hands of the clock on the wall in the figure are not consistent. It should show 8:47; the hour hand should be moved back slightly.
The bottom right annotation misspells "That’s" as "Thay’s".
The row next to last shows "... 1h 2min" in the right column; it should say "... 1h 2 min".
Bob's phone says "You are about to received 1 bitcoin." It should be "receive" instead.
The figure caption "... sends an inv to ..." should use monospace for the word "inv".
Last paragraph contains a dangling modifier: "... he sends it to any of the full nodes, and propagates ...". It should be: "... and it propagates ...".
The second to last paragraph contains an extraneous comma: "Bitcoin Core ships with a preconfigured, block ID ...".
In the first paragraph, the height 54398 is wrong. It should be 549398. Thanks to Dan Berglund.
In the paragraph directly preceeding figure 9.15, the figure reference "Figure 9.14" is wrong. It should say "Figure 9.15."
The sidebar titled "Nonstandard transactions" doesn't use curly apostrophes '’'.
The hash function should be SHA256 (single SHA256), not dSHA256 (double SHA256)
First paragraph says "... because that's a double SHA256 of a witness script". Remove the word "double" because it's actually a single SHA256 hash.
Last paragraph of section "Spending the p2wsh transaction" ends with a double period, "..". It should end with single period ".".
A period '.' is missing in the first paragraph after "... onto the program stack".
The hash function should be SHA256 (single SHA256), not dSHA256. (double SHA256)
The figure after Figure 10.34, is labeled as "Figure 10.3," when it should be labeled as "Figure 10.35."
There's an extaneous comma ',' in the third paragraph at "... have the required, processing power ..."
The third paragraph, which discusses the risks involved in BIP148, says "It could cause a chain split if a majority of the hash rate didn't signal for segwit." This is misleading. Instead it should say "It will cause a chain split if a miner publishes a non-segwit-signalling block." Thanks to Sjors Provoost for pointing this out.
The bold paragraph contains the word "follow" in italic but not bold. The word should be both italic and bold.
In the last paragraph it's stated that "Bitcoin Cash requires the first block after the split to have a base size ≥ 1,000,000 bytes". This should be "> 1,000,000 bytes" (strictly greater than).
In the third paragraph from the bottom, replace the period '.' with comma ',' in ". to make the changes ...".
The paragraph right after the bullet list contains "I've" and "don't" with straight apostrophes. They should use curly apostrophe, as in "I’ve" and "don’t"
The paragraph right after the bullet list ends with a colon character; it should end with a period.
On the first line, the unit BTC is missing: "of 0.00399859 back" should be "of 0.00399859 BTC back".
In the second paragraph, the word "didn't" should use curly apostrophe "didn’t"
The second instance of "can't" uses straight apostrophe. It should use curly apostrophe as in "can’t".
The fifth numbered item uses fixed width font for the number "5." It should use the same style as the previous four items.
The last sentence, "The node will thus never know ..." of answer 9.10 is misplaced. It should be the last sentence of answer 9.9.
The word "can't" uses straight apostrophe. It should use curly apostrophe as in "can’t".
The typesetting of PKHY should be all monospace, but the subscript is not.
The example in the c) answer is incorrect. "≥1,000,000 bytes" should be ">1,000,000 bytes"
The author's company name is misspelled in the Author Bio. The correct spelling is Popeller.