Peterson First Guides are the first books the beginning naturalist needs. Condensed versions of the famous Peterson Field Guides, the First Guides focus on the animals, plants, and other natural things you are most likely to see. They make it fun to get into the field and easy to progress to the full-fledged Peterson Guides.
A very slim, but nice pocket-sized guide. Probably the least comprehensive on my list. Has some basic names, info, and few pictures than others. Opening was pretty good on laying out structure for what to look out for.
This is definitely not the guide for me.