I'm starting a social network. I need a lot of help.
Thank you to those who can help me.
I know how to translate some words that are not translated in the Portuguese version.

I found a file in .php file ossn.pt.PHP.
I include some translations, but I do not know if I did it correctly.
and I do not know how to update.

I need help to take the step by step.

below I show how I changed the file ossn.pt.PHP

         'lastlogin' => 'Last Login',

I started here randomly and in the same format as the other translations.

/ * LHF * /

'video: com: all' => 'All Videos',
'video: com: mine' => 'My Video',
'video: with: add' => 'Add Video',
'emembers' => 'Members',
'Upcoming: Birthdays' => 'Upcoming Birthdays',
'ossn: disklike' => 'Do not Like',
'post: share' => 'Post Share',
'video: com: add' => 'Add Video',

and more ....