How To Add Online Counter on Tumblr?

Hi guys, i just started this blog and i want to show some cool things on Tumblr, i dont too much English sorry about that.

Firstly, i will show you how to add online counter on tumblr.

Open your tumblr blog and click customize and then click Edit HTML.

Press CTRL+F buttons on your keyboard and search </head> code.

If dont find anything, try to search </body> 

İf you find one of them, 

go to http://whos.amung.us/showcase/ 

choose one counter and choose which side you want,

Copy code, come back to your Edit HTML 

paste that code onto </head> code

like that;

That's it. Click save button and i hope it's working.

You can tell me my grammer mistakes :)