Propagating citrus by the homeowner in FL isn't allowed by the State of FL.
This includes growing from seed, grafting to rootstock, grafting, cuttings, etc.
The devastation to the citrus industry in FL from HLB is very significant.
You can purchase citrus plants produced by licensed growers. This includes plants for resale that were produced by licensed sellers. A few examples would be Harris and BriteLeaf.