You now have a multipage set of property sheets with titles of ‘Borders’, ‘Cell Protection’, ‘Numbers’, ‘Alignment’, ‘Background’, and ‘Font’. CONTROL + TAB through these and have a look at the options by tabbing through them.
For example, the first option in the ‘Borders’ sheet is ‘Border Style’ and the default type of border is a 0.05 point continuous line, which will give a border with thin lines which do not break, as opposed to dotted lines, thick lines, broken lines of hyphens, etc. You can choose from another 11 different border types by arrowing up or down this list and leaving focus on the one you want to use.
Keep tabbing through the border sheet controls, by arrowing down you can change things like the colour of your border grid lines or leave them on ‘Auto’ and let LO/OO Calc choose a colour matching the rest of your worksheet colours,. Now CONTROL + TAB* to the ‘Font’ property sheet.
In the ‘Numbers’ sheet you can tab to ‘Category’, ‘General’ is the default format for all cells but you can arrow down this list and change it to something else if you need to, such as ‘Number’ that has numbers given with decimal points or ‘Currency’ so that two decimal places and a currency sign is displayed, etc. By default it will use the currency symbol appropriate to the language set in the MS Windows control panel, although this can be changed by tabbing through to the symbol control and arrowing down to what you want (be warned, though the list of available currency symbols is very long).