This piece will get you started with reading from the 2 staves. 
Be super patient with yourself! Every time you play the notes you are building up your muscle memory and your hands are learning what it feels like to play these notes. 
Keep your hands relaxed! You are aiming for ‘flow’ in this piece.
Notice at the beginning of each line there are very small numbers - they are called ‘bar numbers’ and are literally counting the bars in the piece. Sometimes I will say that we are going from a particular  bar - check the bar numbers to find that bar or simply count along from the beginning.