Johannes,

you wouldn't need to 'guess' every time if you simply follow the instructions outlined in https://www.opensource-socialnetwork.org/wiki/view/1137/how-to-find-something-a-word-pattern-in-the-source-code

Using your text editor in order to search in a bundle of files can't be that complicated...

I took a guess there that it was core/default.php and it was. Thanks.

@Johannes, please search your old discussion topics i have answered to you many times about this.

Thanks. But which file do I need to change?

Here you go!

.home-left-contents .description {
    text-transform: initial !important;
}

I'm gonna hijack this old thread to ask: how do I make that text not uppecase only?

How to change homepage log in page

You're very welcome :-)

Fantastic! Thanks Jeremy

Go to the root of your site and open the locale folder and inside there you will see ossn.en.php

Find this line (20 lines down from top)
'home:top:heading' => "Welcome to %s! Join now to make new friends, create groups, add photos, and much more.",

Change it to what you want to say. Take note that %s is what makes the message list the name of your site.

Welcome to %s! is what makes it say Welcome to MySite!