I like the fact that they start you off nicely with pictures and what not, but right now because there is really nothing that states this is when you use this word its becoming increasingly difficult. What I'm referring to that i have most trouble with at the moment is the possession lessons. Ive gone through them mostly by chance and am still unclear to when to use miei mia or mio (italian) i still don't know what the differences are seeing as the lessons do not really go out of the way to clearly define what they are used for. any help??
The pictures in this case are not supposed to help you. The possessive articles "mio", "mia", "mie", and "miei" are meant to agree in gender and number with the noun. The pictures may give you the definition of the word, but it's up to you to match it up with the right article. Hope this helped!
Congratulations on your progress, nadielle.g! When I was doing the possessive lessons, I printed this chart and kept looking at it. Practicing has helped me a lot. Here's the link: http://www.arnix.it/free-italian/italian-grammar/possessive-adjectives-in-italian.php In bocca al lupo! Buona sera!
Your best bet is to work with a grammar book along with the duolingo lessons. As far as mio/mia or miei are concerned, it has to do with the number of the object which is possessed. In other words, singular item takes mio/mia (eg mio libro) and plular takes miei (eg miei fratelli). Hope that helps!
I would definitely second teacher-hiker's suggestion. I find that duolingo functions well as a giant exercise book but (for me at least) it really doesn't teach me very well.
Before I about my grammar book, I used http://italian.about.com/ but there are a whole load of others that I am sure are very good.
Don't give up!