do we need these?

an (you guessed it) etsy shop called miss purl is selling these little beauties. they're "stitch markers." i don't really know what that is. but aren't they pretty? which stitches do you suppose we would like to mark? and why? should we order some so we have them when we find out.

or is there just the tiniest possiblity that we should really learn to knit first?