Is it possible to have instead mypage.com/?page_id=81 (this is just an example, I am talking about all these pages with long custom links) to have mypage.com/cool/ ? Are there any plugins to achieve this? I used a plugin page links to, but it just links whatever to somewhere else.
Goto Settings > Permalinks and activate permalinks. Follow all the steps including the
You can then change the permalink on the post/page edit page, right under the title.