Come on, surely you’ve done this before?
Citrus has a peak season. Buying and freezing during it can save money since the fruit is cheaper then as well as better quality.
Just zest and juice your fruit, save the rinds to make citrus vinegar!
You want to zest before you juice.
It’s really really hard to zest a floppy lemon, I may or may not know that from personal experience.
That pretty orange squeeze-juicer thing looks nice but it didn’t work so great. It did a real number on my wrists and never could get the last bit of juice out. The good old fashioned glass one above ( you can find one similar here) is my favorite. We actually bought it at a yard sale while on our honeymoon.
I freeze the zest so I can just scrape out what I need with a spoon. If you have a really large amount using the flash freezing method would probably work awesome.