If you are enthused about learning the locksmithing trade, it is easy enough to find a crash course on Google (£200 and £800); or you could always see what books on locksmithing are recommended by bookshop staff. Also, I imagine that it is easy to be pleased by how you can complete an online or correspondence course at home, while not having to give up your day job. Lots of locksmiths start off by working as an apprentice for a seasoned locksmith or by completing a correspondence course – perhaps a combination of these two things. But nothing can substitute real world experience.
Given that locksmithing is but one of the finest and most impressive of the construction trades (certainly by the standards of something like painting), I will confess that I am hardly the best person to confide in for a truly vocal account of locksmithing as an art. Although I have to say that I am aware that there are websites linked to the locksmith trade that discuss alternative ways to get past locks (with the help of very thin needles and such).
There is no shortage of companies offering locksmithing tools as well as services to the general public. The range of tools you can purchase, includes bump keys and tools, lock picks (various kinds), pick guns, slim jims and bypass tools besides the usual keys and key tools. Tension tools are also of considerable importance in the locksmithing trade
Besides that, there are locksmith dictionaries available online, for example the one at http://www.lock-picking.org/locksmith-dictionary.html
Locksmiths' duties include the installation, repair and maintenance of all types of major locks, door closures and panic hardware systems. They can expect typical work to consist of: opening locks with the use of lockpicking tools, or via dismantling or other methods; repairing locks by replacing broken parts; assisting in the determination of methods to be used, including but not limited to key cutting and duplication, adjusting or changing key combinations and recombinating locks; the performance of periodic maintenance and repair on door closure systems; and operating key cutting machines, drills, saws, buffers and grinders, key gauges and locksmith tools.
When first learning the trade, it is for certain that you will need to avail yourself of all kinds of locks, for practice: taking them apart, examining them, repairing them, salvaging them for parts. Ask about second hand locks from junk yards, garage and yard sales, salvage yards, and pawn shops.