hi brother
'I need to tell u a story before I explain u about this problem'
King Ptolemy once aked Euclid to show him the easy way to learn mathematics.....the reply was"there is no royal road to geometry'
Similarly,Thre is no easy way to learn understand neural network classifcation if you dont have 'basics in neural network'.
I shall help u if u can learn following basic things in ANN.....
1.Multi layer perceptron
2.Input layer,hidden layer and output layer
3.Back propagation algorithm
4. Layer connectivity and their associated weights
Then I shall tell u how to use our image in this....
You can use the NPTEL video lectures by Prof.Sengupta from IIT khargpur to learn fundamentals(Atleat see his first 10 videos).It is freely available in you tube.