Another big suggestion is finding small and easy ways to test business ideas and assumptions. I think this is implicit in your post. For example, if you have an idea for a digital course, you may do a free webinar on the same topic first. If you can’t get enough people to show up for a free webinar, then there probably isn’t enough interest for a paid product on the topic.
Other steps in the process of forming a home-based business include selecting a legal structure, filing a fictitious name or "doing business as" statement, and obtaining any needed permits or licenses. The entrepreneur should also evaluate the risks associated with the business venture and make any necessary arrangements for health, life, liability, property, or business interruption insurance. Since it is sometimes difficult for a home-based business to be taken seriously by customers or creditors, it may be helpful to communicate a professional image through stationery and business cards, a separate phone line answered with a formal greeting, and distinct working hours.
One evening, I decided to list a couple of the spare parts on eBay to see if anyone would buy them. I would like to say the parts went like hotcakes and it was an overnight success, but sadly they didn't. Thankfully, I decided to try again with slightly different listing text and managed to sell one of the spare parts for the grand sum of £100. One down and only 200 to go. At this rate, I would be able to see my desk in three years.
There’s more to being a coach or personal trainer than just being fit and loving to exercise. Finding a specialization is important, and licenses might be required for certain types of coaching roles. For instance, a friend in Boston obtained US and European soccer-coaching licenses before opening a successful one-on-one soccer-instruction business.