1. a shortcut or a fast and effective way of doing something
learn the tricks of the trade
This expression refers to special skills, techniques, or methods used by professionals to do something in a quicker, easier, or more efficient way. These special skills are learned or picked up through experience as part of doing one's job or performing a task or activity regularly. They tend to be associated with a particular trade or profession and are little known by outsiders. It can be used negatively, such as when referring to taking a shortcut to do something rather than being thorough. The expression is used mainly in a professional context and is similar to the phrases 'know-how,' and 'business savvy.'