Ya even I did learnt the 8085 ALP programming using Kanitkars book, ya that green color book. I don't think it hard and only requires you to understand the menmonics. For example the memory is the register here. look around and try to figure out what is 'hl pair' and other jargons.
I am not into ALP programming as of now, it has been already about 4 years or so... so i don't really remember the menmonics.
Anyway you can go by the google way .... there are lots of tutorial on the net.