Just do it, start getting your hands dirty as other said. I personally started with composting and now I have a system where my food waste becomes forests, I eat lots of vegetable/fruits and I just throw the bucket on a specific place, cover with mulch and food grows. Avocado, papayas, limes, cucumber, tomatos, lots of them grow easily here just by doing this.

If you look for "agroforest academy" in youtube you may find a video course in english on this syntropic agriculture topic too.