Online Network Marketing Books

I have a business unit has some differences. I can use deductions for all units?

My business has had some work units as a business on their own unique and completely unrelated to same except for operating under a business name. Is a network marketing division, is selling a eBay, and another is to provide an online service. I can use deductions tax for costs incurred for all three of these functions? I also bought a book that to each other like books on eBay marketing, network marketing, and policy related services I provide. Is all tax deductible? I reported for all three units on a form?

If the business is making a difference, you file a separate Schedule C for each one. Books you bought to study the dimensions side of your business are deductible.

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