1.The concept of commercial law: Characteristics, sources and factors that affect it. 2.Companies, employers and starts up. 3. Legal framework of sole traders and partnerships ( requirements) 4. Legal obligations of employers.Labor relations. 5. Legal tools to protect trading companies 6. The theory of trading companies -General partnerships, general and limited partnership, a joint-stock companies - Corporations: General theory - Corporations: Bodies and structure changes - Limited liability Companies. 7. Introduction to commercial agreements. General theory of commercial purchasing agreement 8. Commercial agreements (II): Collaboration contracts, financing, transportation and insurance contracts.agency contracts and the differences with the categories of the labour relation. 9.-Introduction to law applicable to currencies and interest rates: letter of exchange, bank checks, promissory notes 10. Introduction to bankruptcy law: General Theory, principles, bodies, bankruptcy effects, legal remedies, and types.