Start with How To Work With Awkward-Shaped Flowers in a Bridal Bouquet (26 min, Flower Moxie), then Flower Care 101: What to Do When Your Flowers Arrive (26 min, Flower Moxie). All 83 lessons here are free, from the teachers' own official uploads. You'll need floral shears, floral tape and wire, floral foam alternatives and a few more basics (about $90 of kit). The book to keep beside you: The Flower Recipe Book by Alethea Harampolis.