We all well know about Alexa, it's a web information company powered by Amazon. It's described all about your website like Traffic, Ranking, SEO matrix etc. So it's good to Alexa Widget index your web pages properly so you must install Alexa Official Widget on your website, blogg or web pages to improve ranking.
Installation of Alexa Ranking Widget is not so difficult just go to official widget page of Alexa from Here !
Choose your layout as per space and requirement of your web page, put generated code on your site.
Personally I recommended to put generated Alexa Widget code every page or master page of site to good indexing and effective ranking. I also realize increase Alexa ranking of TricksWay after installation of Alexa Widget.
Hope everything is easy for you, if you are getting something wrong don't forget to share your problem via comment you can also mail us.