Good Florida soil IS sand ! Everyone needs to get over this idea of trying to make our soil look like northern soils . Plants do just fine in our natural soils . A few ammendments never hurt like mulch and fertilizers .
You would be amazed at how well things grow IF you choose FLorida friendly varieties that thrive in our sand and weather .
Plant slowly and do lots of reading , listening , watching and research . Do not leap into planting your yard in one day ! You will be astounded at how much you have learned in a few months just from reading the posts on this forum as well as doing some reading of other links provided .
Be patient and WELCOME !