With your zester, zest the lemon rind into a bowl. Only use the yellow part of the lemon. The white part can be bitter.
Make small little squares with the plastic wrap about 2" x 2". Place one teaspoon or tablespoon size of zest into the center of the plastic wrap. Bundle it up and place in a freezer bag or a freezer safe container.
When you need lemon zest for a recipe, just let it thaw on the counter or place directly into your recipe. Freezing it into individual packets makes it for easy measuring for a recipe.
Another way is, cut the lemon in half, juice it and freeze the lemon halves. When you need zest, just use a zester and it will zest like lemon powered snow. (I have not tried this method)
To preserve the juice, just cut the zested lemon in half and place into ice cube trays. Once the cubes freeze you can place them into a freezer bag for easy grabbing.
Recipe by PB + P Design at https://www.peanutbutterandpeppers.com/2016/01/20/freezing-lemon-zest-and-juice/