Go Botany is a resource for identifying New England plants, but it can be good for just the plants and information even if the dichotomous keys might not work for other regions.
https://gobotany.nativeplanttrust.org/ The pictures are in color though.
Also look at Native American Ethnobotany
https://naeb.brit.org/ and Plants for a Future
https://pfaf.org/user/default.aspx. The last one may be much closer to what you are looking for.
All resources are going to be slightly different and the uses may not line up with your experience. (Some books say black nightshade, Solanum ptycanthum, is poisonous--I eat as many as I can get every year! More recently it has been more or less proven that this statement is generally speaking false.) Maybe it is a case of filling them in with your pen as you find them and learn about them? Similar to how some herbalists keep a "materia medica" notebook.
When you are in a deeper relationship with these plants, you will not need a book to remember their uses, identification, etc.; it will be like seeing a friend, recognizing their face, and remembering their name, personality, connections, home, etc. Deepening our relationship reveals which plants agree with our digestion best and make us feel healthy and well, it reveals how they might be harvested sustainably, and so on... and it takes time! Don't worry if you can't memorize all the plants right away. It will come with time.
I would agree with Jack's statement but put it in regular case... foraging is not scary if you do it with proper respect for your life. Most poisonings, I have heard, have to do with someone eating something unidentified on a random impulse, not people trying to pick an edible plant and mistaking it.
I wish you a good foraging journey!