I use my blender with some water and fruit until it becomes like applesauce.Then i take a coffee filter pour the applesauce like fruit close the top and gentle squeeze until it become juice.i pour it in a the baby bottle or cup.
The easiest way to ripen an avocado is to place it on your counter or in your fruit bowl for a few days until it gives slightly to gentlesqueezing in the palm of your hand.