Well, you just begin from where you are right now!
Many adults who are entering the Catholic Church, or even those who are thinking about it, follow a process called “R.C.I.A.” (Rite of Christian initiation for Adults).
For information please see the information folders available at all church entrances. Still interested or have questions contact John Raymond email@example.com, even if you are an adult baptized Catholic but haven’t received 1st Holy Communion or Confirmation. You can also call the parish office at 941-497-2931 and leave a message and John will get back to you.