Equity and venture capital providers have become scarce in our economy. Therefore, they demand a careful elaboration of a business idea in a business plan. This business plan must be able to answer all questions from a potential investor, whether it is a private investor, a bank, or a public funding agency. Only those who precisely outline what they want to do, how the first day in their own company begins, how the first week unfolds, how the first month ends, and what the first year should bring, have a chance of success. The author also presents alternative strategies and offers practical assistance for the solid development of a business plan with working forms and checklists.