While I am no legal expert, I can provide you with some general guidance on land purchase. First of all - are you an indian citizen and do you have an agriculture background which you can prove? These are inevitable requirements for any land purchase in India. In certain states you need additional proofs like for example in Karnataka you need a PAN no and proof of income no greater than 2 lakhs per annum.
I also have the same query and also need to know about other type of land like barren land, dry land and wet land to use as eco village. how to get the dry, wet or barren land if I do not satisfy the agricultural backgorund?