Pine needle tea and phloem chips.

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If i may suggest a book- The Peterson's Field Guides, There are many version's ranging from Eastern/Western Medicinals to wild edibles, Tracking, birds, fish. They will cover pretty well everything you will need to know about the area you are living in- including poisonous plants and what you can/cannot eat.
Its is important that you have a field guide as a wrong choice in plants can lead to sickness and even death.