Before you begin, how large is your garden? Propagating your own seeds can take up a lot of space.
If you’ve got enough room, then propagation, or seed banking is worthwhile.
If you don’t have the room, then seed swapping is also a great way to get new plants. When you buy a pack of seeds there is generally way more than you can use, consider swapping them out with other gardeners (either seeds or seedlings). It’s a great way to minimise on cost and maximise on variety.
Somes seeds last longer than others.
Onion and parsnip have a life expectancy of a year.
Sweetcorn, leek, and pepper two years
radish and cucumber five years
Hybrid seeds -F1 First filial generation are plants that are generally more uniform and vigorous however seed saving will not yield seeds that resemble the parent plant. (if they produce seed at all)