I came across the following in a children's textbook about Japanese:
[Ninja] did not have magic powers but they did have [discipline, determination and daring] ... These attributes will help you too succeed in learning a new language.
At first I thought it was wrong, but Comma or no comma before "too"? (and possibly others) states that commas aren't required unless the "too" is used for an abrupt change of thought, and this question on infinitives says you don't need to have a "to" before "help". Combined, would this mean that the quotation is grammatical?
Also, is it recommended to edit a phrase that looks incorrect so that it looks correct, or to avoid schoolchildren (and others!) thinking that the infinitive is "too learn"?