In previous times, you would be required to attend classes at a school in order to receive your theoretical training credentials. However with the expansion of the internet and its uses it is now possible to take the courses in the comfort of your own home on your computer. There is a wide array of online courses available today, and you can even receive all of the training you need to begin your apprenticeship and even start making money working as an assistant for an electrical firm. For example, you can revise all your 17th edition questions online so you’re confident going into your 17th edition exam. While practical training is definitely needed, so is theoretical training, and there is no more convenient way to do it than in the comfort of your own home, on your own time.