Bambam shootem up,
A hunting class maybe a start. Suggest that you check them out. Personally I have never been impressed with the content of the courses or the fuzzy faced instructors.
I would also check out underwater hunting clubs, you will gleen more from that type of an association than you will in most courses. After you have been around for a while and proven your self they will share--techniques and the famed "Secret Spots."
Two Clubs that come immediately to mind are:
~~~Sea Sabres established in 1953, the oldest coninually active SCUBA diving hunting club in US, maybe the world, so thay have a lot of vintage divers who will take you under their wing..I think they are currenty meeting in Brea.
~~~The Long Beach Neptunes established in 1947, they are the second oldest spear fishing club in world behind the Bottom Scratchers which were formed in 1932 (FYI spear fishing is breathe hold diving --Using SCUBA is fish shooting) They meet in Paramont. They do not accept members openly -- you must apply and become a provisional member and prove your self, be voted in to membership...Longest provisional was over 9 years-- but you are young. The LB Neptunes set and hold more Spear fishing World Records than any other club.
May I suggest that you check these and other clubs out in California diving news (CDN.)
OC is a great place to dive and spearfish--I prefer that over shooting fish with SCUBA which is like shooting a cow in a feed lot--Several spearfishing world records were set off the beaches in OC; the Black Sea Bass, 480 pounds in 1960--when is was legal and the White Sea Bass, 70+ in 1973.
Good luck and keep in touch.
SDM,
(FYI yes I held a spearfishing record!)