You need to find a website in your native language that offers free WOrdpress Tutorial for new users. Otherwise you will be lost very easily. And take it one step at a time.
Log-in to WordPress back end (if you don't know how, ask your hosting company)., When inside , click on Pages and click Add New. Create a page by giving it a title and a few sentences about something, then click Save. Now you go to Settings > Reading and on the very top you should click the radio button to change the many news stories one on top of another (that is called a blog).
Many articles one under another, showing the summary is called a blog. Your homepage can be a blog or it can be a page you create. Log into the back-end of WordPress by going to http://www.my-domain.com/wp-admin .
See image attached (http://i.imgur.com/3fDsZ.png). So you need to set Front Page as the Page you just created, and save. When you look again you will see that the blog was removed.
Enter your login and password and in the back-end please create a new page called Hello World. Don't forget to save, No you can click on You can create a page , save it , then go to Settings > Reading, and select the page you just made.
Remember, pages can have hierarchies. You make one page about a dog, another page about owner, and u make owner the 'parent of the dog page' and then on menus one is above the other. Posts have categories and tags.
So you can group similar pages together. You should read introduction to WordPress in your native language to get a clear understanding, it is not difficult , just new.
So you need to set Front Page as the Page you just created, and save. When you look again you will see that the blog was removed.