How I organize my seeds

Nothing special at all. Just a plastic bin for art supplies and some labelled bags, and similar plants are generally grouped together.

I don't sort them by season because I'm pretty familiar with what grows when. Many are 3 season plants, anyway.

If you have the space, it's definitely advisable to store your seeds in the fridge or freezer, as this can increase the lifespan of your seeds. I don't have that kind of space, so I just put them on the floor of a cool room.

You will find that some seeds last longer than others. Save seeds whenever you can to refresh your stock, and don't forget to date them.