Craig R. Vierig, principal broker of Vierig & Co. Real Estate, 5695 S. Highland Drive, will present a home-selling and home-buying seminar on Wednesday, April 24, at 7 p.m. in the company office. He will discuss the latest techniques in buying and selling houses. A representative of the Department of Housing and Urban Development will be on hand to discuss how to buy a house from HUD for as little as $500.