The theme is completely translation ready. To translate it to your own language, you will need a .po editor software like Poedit. Here is how you can do it:

1. Locate your default.pot file from the /flatbook/languages/ folder
2. Duplicate the file and rename it to xx_XX.po where ‘xx’ is the localization code of your language (eg. fr_FR is french)
3. Open the duplicated po file with Poedit, and translate the desired strings to your own language
4. Once feel ready, just save it in the same directory