Caloosamusa

Go to a citrus nursery, purchase a grafted tree, root stock is important so do your homework first. Match soil type and disease presence in your area. For south Florida Grapefruit x trifolata does well. Try to stay away from rough lemon root stock. If central Florida try to get sour orange, while it is suseptible to trestiza, trestiza is only a problem in commercial groves where the root systems of the trees interlock allowing a complete spread of the disease through the grove. If not sour orange then get one on trestiza.

Or, you can simply start it as a cutting. make sure you mulch well so nematodes do not infest it, make sure to keep the mulch an inch or two from the trunk. Do not overwater!

If grafting do so when the bark is slipping and t Bud.

I Hope this helps.