You should not have put a comma in front of "and" -- it is not used to cooridinate a 2nd independent clause, you are only joining two verbs (read and appreciate). As for the last sentence, you could probably use "whose" rather than "which" to more clearly indicate the ownership of the books.
Another suggestion for better parallelism is to change the first part of the sentence to say:
Both Americans and Englishmen read...
Even with these suggestions it is still a kind of awkward sentence. If you are required to use a subordinating and a cooridinating conjunction to fix the sentence, be sure to consult your grammar text for a list of common conjunctions. Remember that only COORIDINATING conjuctions introducing a 2nd clause need a comma in front of them, suboridinating conjuctions do not.