Although I am not IT professional, I could easily install the plugin on my website. The Qlue Tooltip worked nice on my website until I used it in Category Blog Layout. I had to divide the content into two articles displayed in blog format. Unfortunately after that the tooltips didn't display in the second article. The problem was quickly solved thanks to the support of the developer who sent me a system plugin version of his tooltip. The support is really quick and efficient! I like this plugin very much.