Futures and investment advisory firms, investment counseling services, research organizations, and mutual fund managers compose the investment advice industry
Marketing Consultants give advice to medium sized business. They also do things like help prepare business plans, design plans and etc.
advice
Three kinds of business are:Sole properietorshipPartnershipCorporation
small business
IAG offers a wide range of consulting services depending on your request. It specialises in business management, software management , investment etc.
An aviation attorney provides counsel and advice on business and aviation legal problems, including aviation regulations and transactional law.
Hotel Restaurant Catering/Event Planning Limousine/Airport Transport Service Tour Operator/Guide
there are three basic kinds of business sole proprietors,partnerships, corporation
What do you mean by "kinds"? Brands, models, configurations...? In all cases, there's probably far too many to be named practically on this site... pretty much any country with an automotive industry has manufactured heavy trucks, brands have been in business, gone out of business, etc.
There are many, many, books with business advice. The most well-known of these kinds of books would be the "For Dummies" series. In addition, there are sites like entrepreneur which can also provide insight.
ewan
any kind you can think of