mazda,
Are you joining the reg force or reserves? There is a difference in duties/training between the two. Reserve force techs rarely, if ever, train to repair weapons on the armament side (artillery pieces, tanks, etc.); their work is all on the small arms side.
In the reg force, as a weapons tech you would be responsible for the repair, inspection, modification and some transport related duties (packing, etc.) of all land based weapons. Weapons techs are also responsible for locks, safes, stoves, lanterns, bicycles and other sundry items. If they introduce a new item and don't know who they want to maintain it they give it to the weapons tech. Whether in garrison or in the field you would have the responsibility of supporting your unit (first line) or other units in a first or second line role. First line techs do less in depth repairs for a particular unit they are posted with and pass on any more time consuming repairs to a second line shop. Usually, you will find these shops as a base maintenance or in a service battalion and they are usually better equipped and better staffed than a first line shop.
All persons start out on their QL3 course where they learn the basics of land weapons. The reg force course is six months in length and takes place at CFB Borden, Ontario. I'm not sure the length of the reserve course although I'm guessing about three months. Upon grad, you are posted with a unit and proceed through on the job training (QL4). When finished and you are course loaded you would return to Borden for the QL5 course where the info is rehashed and more in depth info is taught. You are then qualified to work unsupervised. Other courses include specialty courses such as M109, Leopard tank, security containers (safes, locks), Fluid power courses (hydraulics), etc.
It is a very interesting trade and quite challenging if you enjoy taking things apart, troubleshooting and seeing how they work. You should be reasonably skilled with tools and good with your hands to enjoy this trade. It is also quite a small trade so you will probably meet most techs eventually (or at least hear stories about them
). Some of the work can be monotonous such as performing pre fire inspections on 500 C7s. Boring.
If you have any specific questions please feel free to post them here.