The Basics - How to Cut an Avocado
Step 1: Cut the avocado around the long way/vertically as seen in the picture above and then twist both sides - the avocado should separate into 2 quite easily.
Step 2: Remove the pit - I use my fingers but I have farm-girl hands and don't do anything with my nails - so if you prefer you may use a spoon to remove the pit. (Some people recommend whacking a sharp knife into the pit to remove it that way - I NEVER recommend flailing around a sharp knife).
Step 3: Cut the inside of the avocado into a grid pattern as seen above (NOTE: When I cut the grid I held the avocado on a cutting board - I am only holding it that way for the picture)
Step 4: Scoop the avocado chunks out with a spoon and use in a salad or mash for guacamole.