Galleria Images Model


i am new to php (beginner level) and have successfully managed to install the yii framework and m trying to use galleria to put pictures in my website. however i cannot understand how touse behaviours… i wud really like help in understanding how it works…please help guys if you can.

wot is image model and where do i access it in the newwebapp???

m following steps outlined in the following link in trying to set up galleria but m stuck at step as i do not know wot it is talking abt

please help anyone