1. Make site translatable. go to mysite/_config.php and add lines:

   // Set the site default locale
   i18n::set_locale('en_US');
   i18n::enable(); 
   global $allowed_i18n;
   // Set the site allowed locales
   $allowed_i18n = array( 'de' => "de_DE", 'en' => "en_US");
   // Set the site default locale
   Translatable::set_default_locale('en_US');
   // Activate translatable and make siteconfig translatable
   Object::add_extension('SiteTree', 'Translatable');
   Object::add_extension('SiteConfig', 'Translatable');

2. In mysite/code/page.php change code on page_controller:

   class Page_Controller extends ContentController {
       public function init() {
           parent::init();
   
           if($this->dataRecord->hasExtension('Translatable')) {
               i18n::set_locale($this->dataRecord->Locale);
           }
       }
   }

3. Make folder named lang in to mysite folder
4. Make locale named file to lang folder (example:en_US.php)
5. Add translation codes to mysite/lang/en_US.php like so:

   <?php
   global $lang;

   //Page.ss translated fields
   $lang['en_US']['Page.ss']['WAYTO'] = 'Find the way...';
   $lang['en_US']['Otherthemefilename.ss']['TRANSLATABLEFIELD'] = 'Translatable field translation';
   
   ?>

6. in you yourthemefile.ss (example Page.ss) use code for translatable like so:

   <% _t('WAYTO','Find the way...') %> //this part add the translation for WAYTO in your theme file.

7. Flush your website cache to make the changes viewable:

   http://www.yoursite.com/?flush=all

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