Generally, company names are not italicized or enclosed in quotation marks. Product names are often capitalized but can be italicized or enclosed in quotation marks when emphasizing them in a sentence.
No you do not
Yes.
No, Italics.
Yes, you can put quotation marks around the names of specific programs or software applications when mentioning them in written text to distinguish them from surrounding content.
You do not put band names in quotation marks. However, you do capitalize the band/artist. Correct: Skillet Incorrect: "Skillet"
In the quotation marks.
Company names are not underlined, nor are quotation marks put around them. They are written as normal proper nouns unless there are underlines or quotation marks in the name itself.
Quotation marks. "" <- are quotation marks
Quotation marks never indicate emphasis. I would leave them off names.
Quotation marks should not be used when blockquoting.
Enclose the quote with quotation marks: "Put the quote from a play here."