Oh, it is not issue 🙂
1) When You stay at the first page or End Of Page, So The Start, Prev link will not have the link and having the disabling style >> This will not cause confused to readers and they understand that those links can not click and switch page.
You can see all demos on joomlart demo, those link having same style, for example: http://templates.joomlart.com/ja_teline_iv/index.php?option=com_content&view=section&layout=blog&id=14&Itemid=419&limitstart=45
2) If you would like the pagination having equal or more than 3 pages, you will add more artilces or access the menu configuration and change values for the Intro Parameter, Leading Parameters , When done you will get a look like as second snapshot.