... [My] question is mainly for tech divers cause thats my direction i want to go in ... BEAR IN MIND I DONT KNOW SQUAT ...
Lou19604, sometimes new divers who express an interest in tech diving, don't really know what tech diving is, nor what it is for. If you're one of these, then the following is for you. If not, stop reading this NOW! Otherwise, please continue.
There seems to be no universal agreement as to what constitutes tech diving, although many divers think that if one is diving in an overhead environment--i.e., diving where he cannot make a direct, unimpeded ascent to the surface (where there's an infinite amount of air to breathe!)--he is, or ought to be, tech diving. Or if one is breathing a gas other than simple, everyday air or two special gases known as NOAA Nitrox I and NOAA Nitrox II, or if one is switching (or altering) his breathing gas at any time during a dive, then he is engaged in tech diving. Or if he is using some types of specialized scuba equipment (e.g., a closed-circuit rebreather), he is tech diving.
Examples of overhead environments include submerged caves, interiors of underwater shipwrecks, and flooded mines. Sufficiently deep and/or lengthy dives which do not permit a diver to ascend directly to the surface without having to stop at a specified depth and wait a while before ascending to the next specified depth to stop and wait a bit, etc., until one reaches the surface, create an overhead environment, too.
Are you interested in doing these types of dives in the future? If not, then you really don't need to worry now about gear that's suitable for tech diving. A tremendous amount of enjoyment can be had simply scuba diving within recreational scuba limits (as opposed to tech diving limits), and a diver can become an extremely competent recreational scuba diver without ever having taken tech diving instruction nor purchased gear suitable for tech diving.
Spend some time reading through the various forums on Scubaboard. There are an awful lot of people doing amazing dives while remaining within recreational scuba limits.
FWIW,
Ronald