Real estate conveyed to an officer under this article shall, unless such court direct otherwise, be sold, after giving at least thirty days' notice, by posting the same at the door of the courthouse of such officer's county and some other conspicuous place, near the residence of the owner, if he be a resident of the county, and by publishing the same as a Class II legal advertisement in compliance with the provisions of article three, chapter fifty-nine of this code, and the publication area for such publication shall be the county. The real estate shall be conveyed to the purchaser by the officer or his deputy.