There are a lot of place to find ideas on how to get into an industry and how to progress there. Each business and industry has its own culture and way of solving problems, although businesses in the same industry usually have quite a bit in common. Finding the best career advice means learning from an experienced worker, and a lot of advice is career-specific. Visit a website that has the realistic beat on tough businesses to get into.
It is very profitable to know before you go. This is especially true of careers because it means avoiding wasted time and tuition. A career path might be attractive because of the salary, but it might be a bit too much for some people to enjoy or comfortably work in. Understanding an industry and what is expected helps a person to prepare a career and themselves before setting a single foot in a classroom.