Portuguese is such a beautiful language. It's sad to read that he wasn't read to as a child, but he really need not fear going into a bookstore to buy books for your DD. All he has to do is ask the sales team for help. They love helping and they will point out books that you might not have come across on your internet search. I would ask them to point out some unique ones.
And if he didn't get much help at a certain store than don't go back to that one. I find the Mom and pop shops are the best places to discover some unique books. I remember when we were in NYC and had gone to FAO toy store only to discover an Eloise doll. From there we had to find Eloise books for DD. We went into a few bookstores: some big some tiny and I so discovered that the tiny stores had more of a selection and if you are lucky you find a unique bond with the subject matter. We bought a collective work on Eloise at the tiny store and one of the salesperson actually knew the illustrator of the Eloise books.

Yes I think my biggest complaint about Amazon is it isn't well organized.

Update of 'the'. DD was reading the other night and had no problems with 'the'. I think we have gotten past that point. Yay!