If you don't know, hire someone who does
Buying or selling raw land can be an extensive process and going it alone isn't for everyone. A real estate agent can be a big help. She'll know the region and how the real estate market is priced in the area. She can help you find a suitable place, negotiate a reasonable price and make arrangements for the transfer of the property.
A realtor can also explain real estate terms and processes. For example, you might want to know more about obtaining an option to purchase, which gives a land developer the right to buy raw land at a set date at a set price by making a non-refundable deposit. A real estate professional can also provide you with information on the Entitlement Process, which involves getting government approvals for land development [source: Hanlin].
A real estate attorney can also be helpful. He or she can check to make sure the land you want is free of pending court action, that the seller has clear title to the property and that there are no access issues.