Is there somewhere to find a vocabulary list to practice with while you're going through a section? Without repeating lessons multiple times it seems like you don't get enough practice with the words. Also if you don't know the words and don't remember it after the first time you see it you can't really complete a lesson without taking it multiple times.
Maybe you are able to learn Spanish from another language, not a reverse-course. There are some other sentences offered. The most words are the same.
If not, I only can suggest to take a pen and a sheet of paper and create you own sentences or little storys, that we can enjoy, if you puplish them. Maybe you get other storys back.