Sketch out your path design on graph paper and determine the number of bricks needed for the project. (a common brick is 8" by 4" by 2 3/8"). Increase your estimate by five percent. Also, figure out how much masonry sand you need for a sand base that is 1 1/2" deep over the course of the path.
Use a measuring tape to mark the length and width of the pathway. Use marking paint to outline your path on the ground. Use a shovel to dig up and excavate the dirt to a depth of 5 1/2" to 6," or enough to allow the bricks to lie flush with the ground.
Install the 2x2s or 2x4s on edge along the edges of the path (called "screed rails"). Wear gloves, if desired. Place a level on the rails to assure that your path will stay even as you work.
Moisten your masonry sand just a little and pour it in the three-foot section between your screed rails. Smooth and level the sand with the short 2x4. Add sand as needed to fill in any gaps. Move the screed rails to the next three-foot length and repeat.
Stretch a mason's line or string between two stakes from the beginning to the end of the three-foot section being set, in mid-path, to help you align the bricks. Start laying bricks at one corner using a mallet or block of wood to tap the bricks in place. Check each section by laying the short 2x4 on the bricks and placing the level on the 2x4. Make adjustments as needed. Complete the entire length of the path.
Determine the number of end bricks needed and cut with a concrete saw. Wear goggles.
Fill the joints with the sand. Spread moistened sand evenly over the bricks. Allow it to dry. Use a push broom to sweep the sand into the joints. Sweep off the excess and spray the surface lightly with water. Add more sand if necessary.
Edge your walkway with edging materials, either plastic or aluminum or even more 2x2s or 2x4s. Dig along the edge of the path deep enough to insert your edging material flush with the path.