Line 2 - The business name of your business, if it's different than line one. This is common for sole proprietors that "DBA" do business.
Lines 4 through 6 - about the location of your business.
Lines 7a and 7b - name of the principle officer, owner or partner and SS#, ITIN or EIN.
Line 8a and 8b - Check box that describes the type of business entity. Sole owners must provide a SS#.
Line 9 - Check reason you're applying for an Identification Number.
Line 10 and 11 - date the business was started.
Line 12 - first date wages were paid.
Line 13 - highest number of employees you plan to hire.
Line 14 - principle business activity or use "other". Beating up curious people would be "Other".
Line 15 - describe the principle line of business; merchandise sold, products produced or services provided.