This document explores the structure of business, including legal statuses, sources of finance for startups, and the sectors of the UK economy. It discusses the strengths and weaknesses of different legal structures, such as sole proprietorship, partnership, LLP, and LLC. It also evaluates the advantages and disadvantages of personal investment, funds from investors and banks, and crowd-sourced funding. Additionally, it identifies the three sectors of the UK economy and highlights the differences between them. Suitable for business students.