Dynamic and easy to learn don't really go hand in hand...
The fench defense is a great defense to e4, the ideas are easy to grasp and memorizing lines is not very important (at least in steintz defense). French defense can also be played through out your entire chess career!
I encourage you to look it up.
I need a dynamic, easy to learn (like in three days), and fun defense to 1.e4. This is one of my ideas, myself being a David Bronstein fan...
but I am still very unsure... I have a tournament coming in just a few days and I am stuck.
Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!