To insert the aigu:
Hold the Ctrl key and type an apostrophe ('); release both keys and type the letter e to automatically add the aigu. This apostrophe mark appears above the letter and points down and to the left. It only appears over the letter "e" to change its pronunciation to "ay."
For other marks, in Microsoft Word, go to the Insert tab, then Symbols, and More Symbols. Double click to insert.
Or, use a search engine on the web and type in specific accent marks for instructions on inserting.