A good path welcomes you to your garden and invites you to slow down and see what's happening there.
The first step in any path is to prepare your site. Smooth your surface, remove weeds, and outline the edges.
Step-by-step: How to make a flagstone path
Concrete, aggregate, bark, gravel, and stones can be set directly on stable soil; paths made of of other materials need a base.
Sand is a good choice, but it can wash out from under pavers and bricks, making them settle unevenly. To prevent washout in rainy areas, layer sand over a 2-inch gravel base.
Many people also put landscaping fabric under any loose-laid material (like gravel) to keep it from mixing with the sand or soil below. Keep the fabric down by stuffing its edges under the benderboards.
You can make grade changes either with steps or simply by sloping the path.
Next: Step 1
Get inspired: 20 great garden paths