There are tutorials right on your phone. Tap on the "help" icon. There are also tutorials in the Motorala site. As for search engines, just look up in the upper right corner, and you'll see the search section. No, you cannot make the keyboard smaller. As for Pop-up, what pop-ups are you referring to? If you are talking about them connected to your browser, your browser should have a pop-up blocker.
If you are getting popups, check any free apps you have downloaded because some are malicious software and cause popups on your phone when you use the browser.