Purchase the right tool for the right job. It can be impossible to complete a task with a tool that is only partially designed for what you're doing. Craftsmen who use the wrong hand tool for a task often learn bad habits that must be relearned once he owns the correct tools
Start up a relationship with a master craftsmen in your craft or field. A master craftsman has collected years of experience from a lifetime of trial and error. You can often gain more expertise by spending a few hours with a professional that you will learn in months in your shop on your own.
Enroll in adult enrichment classes for your trade or craft. Community organizations such as local adult education offices, community colleges, or professional trade organizations regularly host classes to teach a trade. Establish the habit of continuing to work on your skills in addition to working with your skills, and you will soon become an expert in your field, and have expertise with the required tools.
Enroll in an apprentice program under an experienced professional in your field. Careers in construction trades such as electrician, plumber or carpenter have formal apprentice programs so novices can obtain the needed expertise. If your field doesn't have a formal program, find a professional in your field, and offer to apprentice under his supervision for a few months.