Make sure your avocado is ripe! It should give a little when you squeeze it gently. Keep avocados in the fruit bowl! When they are ripe then you can store them in the fridge to last longer.
Cut in half length ways. Let the blade of the knife feel the stone in the middle and then move around it.
Gently but firmly tap the knife into the stone
Twist the knife to dislodge the stone
Carefully! Hold the avocado in one hand, cut the flesh into strips, go gently so you don't pierce the skin or yours! A blunt knife is a good idea when starting out!
Using a dessert spoon, "cut" into the flesh along the skin lines
Follow the skin and move the spoon around
Until all the dice are loose
Tip your dice into whatever you need them for!
Let me know how you get on! :-)