I believe you meant to write:
"I know English; I learned it from a book."
One conjugation error, three capitalization errors, and one punctuation
error, all in one sentence - yes, I can see why you consider yourself an
authority on the English language.
Joseph S. Barrera III (firstname.lastname@example.org)
Phone, Office: (415) 778-8227; Cellular: (415) 601-3719; Home: (415)