Before you do anything! Read the first two books, first.
Edible Forest Gardens - Volume One
Edible Forest Gardens - Volume Two
by Dave Jacke with Eric Toensmeier
Two book set, $100. Available in PDF format for free.
These two books will save you BIG money and mistakes that may take months to undo. It will be the best $100 bucks that you'll invest in yourself.
Here are two more books that are a great start to your library
Creating a Forest Garden
by Martin Crawford
$30, also available in PDF format for free.
This book covers all the plants of the seven layer forest garden in detail. Huge number of very useful reference tables by plant forest-layer and uses.
Will Bonsall's essential guide to radical, self-reliant gardening.
by Will Bonsall
$35, also available in PDF format for free.
This book is filled with useful tools, tips and how-to's