Seedling identification europe

Does somebody know literature for seedling identification for europe plants? Often I try to identify them, but it is hard to destinguish them. Thanks for help :)

I don’t know literature but maybe you’ll find photos on this site interesting: https://pl.wikibooks.org/wiki/Siewki_roślin_flory_Polski
Seedlings of many Polish plants, unfortunately written in Polish but Latin names for species are also used

Welcome to the forum!