The outside of a home is just as important as the inside--and you can make the desired improvements yourself, thanks to Popular Mechanics . Using hundreds of detailed diagrams and color photos, the magazine’s trusted and skilled professionals explain the fundamentals of garden planning. They demonstrate every step of erecting fences and gates; building walls of stone, brick, mortar, and concrete; adding cobblestones and curved steps; and constructing ponds, rockeries, and cascades. Do-it-yourselfers will rejoice at the rich display of available tools and attractive materials that make the work easier and the final results more beautiful.