You can go all out with tools out the wazoo or stay frugal with minimum tools. The only tool I cannot live without is my Hori-Hori knife. It's the best tool ever!
Everything you might need to harvest your floral and food crops is listed above, but there are many other tools to use to pick and preserve. Those tools are listed here.
Here are some of the major U.S. national and international organizations that may interest you as a gardener. TONS of education, resources, and help here.
Use these popular books to learn more about various gardening techniques and skills.