4: Hanging (fitting) the gate.
Place the gate in between the two gate posts and sit it on packers so the gate is about 50mm (2") off the ground. (Adjust accordingly if required, to allow for the contour of the ground and to ensure that the gate will be able to swing all the way open.)
Place wedges or packers at the sides of the gate so that the gaps between the gate and posts are even, and the gate is 'jammed in place'.
The gate should be able to stay in position by itself while the "T" hinges are screwed in place. Place a hinge on each horizontal frame member (3 in all). If the gate is to open inwards, then the hinges will be fixed to the inside of the gate to the horizontal frame members. If the gate is to open outwards, then the hinges will be fixed to the outside of the gate, to the boards and in line with the horizontal frame members.
Once the hinges are screwed in place, take out the wedges and/or packing and fit the gate latch. Note that usually, the latch should be put half-way up the gate, but if the gate is to keep little kids in or out, then put the gate latch more towards the top of the gate.
Finally, cut a hole in the gate handy to the latch and big enough to put a hand through. This is so the gate can be opened from inside or outside.