Adding Titles & Lines in Numbers

Question

How can I add a title to my spreadsheet?
How can I add lines in the spreadsheet to distinguish some of the cells and rows? A partial line would be sufficient, either a ..... or a - - - - .

Answer 1

How can I add a title to my spreadsheet?
You can display the name of any table by selecting the table, then checking the Name box in the Table Inspector. Table names are edited in the Sheets list. Double click the name beside the Table's icon to place the insertion point in the box, then edit as you would a file name.
(Page) Headers can be used to display Sheet titles. Headers (and footers) are visible only in Print View (View menu > Show Print view), where they appear at the top of each page. Text is usually centered, but I've used Left alignment here to compact the image. Headers are independent for each Sheet. The light grey lines in the image are the page layout markers (View > Show Layout), and are generally hidden. 
For a title that is to appear when Print view is hidden, and is to appear only once, use a Text box.
How can I add lines in the spreadsheet to distinguish some of the cells and rows? A partial line would be sufficient, either a ..... or a - - - - .
You can use Borders on individual cells, a group of cells or a full row or column.
You can use fill colour in individual cells, a group of cells or a full row or column.
You can set the contents to bold, italic or underline or change the text colour to highlight cells or rows.
All of these are set using controls in the format bar or in the Inspector. Details on much of this can be found in Chapter 5, Working with Table Styles of the Numbers '09 User Guide. Numbers vocabulary, which will help in clarifying your future questions, may be found in Chapter 1. The guide may be downloaded via the Help menu in Numbers.
Regards,
Barry