Setting up a sole proprietorship has advantages like total independence, sole ownership of profits, and low startup costs, but disadvantages include unlimited personal liability, limited access to capital, and business ending if the owner leaves. Corporations are more complex legal entities separate from owners, but establishing one has challenges like high incorporation costs and annual reporting requirements. While not required, partnership agreements outline responsibilities and prevent disputes; contents typically address ownership, profits/losses, capital contributions, and more. Franchise benefits include an established brand and support system, but costs are high and flexibility is limited by contractual obligations to the franchisor.