I gave up my 40.00 plus an hour future (80,000.00 to 120,000.00 a year) as a long shoreman here in B.C. , to open up shop as a specialized riflesmith/stock maker

70% of my knowledge gleaned from an ederly ex usmc armourer/friend in south dakota, usa. The rest over the past 5 years dealing with chinese rifles here in canada.
as Gunnar says, specialize, specialize, specialize. This will be your bread and butter work and what your reputation will be based on

Give me a couple years and I will be looking at taking on an apprentice in the b.c. interior. If my sons show no interest in taking over the business one day..... I'll go outside the family to grow the business.
I love what i do, and leaving long shoring for what i love to do was not a hard decision to make. I got tired of sitting in my machine watching raw logs go by the boat load to china and elsewhere.... it was a moral decision LOL. I also have the benefit of a wife who works in health care and loves that i love what i do hehehehe.