Dig a hole 1 to 1 1/2 feet deep with a post hole digger.
Place the concrete into the wheelbarrow and mix in the prescribed amount of water with a shovel. Continue mixing until the concrete has a putty-like consistency.
Shovel enough concrete into the hole to fill it halfway.
Check the post for the end with holes. This is the end that will be braced into the ground.
Press the post into the hole so it is submerged into the concrete.
Fill the rest of the hole with concrete, holding the post straight as you fill. Let the pole's bracing set for 24 hours before installing fencing.