Please help with node :)

Hi,
first of all, I want to stay I am NEW in Drupal, so hello to you all

Now, there is a question I want to ask and I hope you can help me resolve the problem.

I noticed that every page I creating with the Corporate Clean template, that page has a node/2 , node/3, etc.
How can I change it and instead of nodes to see the actual page title?

For example

mydomain.com/products instead of mydomain.com/node/2
mydomain.com/services instead of mydomain.com/node/3

etc

Can you please help?

thank you