Originally Posted by Speed Racer
So you're not paying taxes on the money you earn? Yeah, that's a problem, as well as you not being able to provide proof of income. If you want a legitimate job, you need to learn to act legitimately in order to get the financial help colleges may offer. Otherwise, expect to never be able to get credit, buy a home, buy a new vehicle, have medical/dental insurance, or have life/long term disability insurance. Being paid under the table works for kids. For adults it's just a short, fast ride into poverty.
Not to mention, if you are going to pursue a career as a farrier you are going to be self-employed -- as such, you will need to start learning about filing your taxes as a self-employed person, how to report your profits and losses, paying your self-employment taxes, etc. You need to learn not only the technical side, as far as trimming, but also the business side.