Actually I work on the header and footer inclusive the needed snippets and blueprints.
I want to show the numbers of comments and articles in the footer - how can I make it?
It will look like this:
Comments: xxx
Articles: xxx
That depends on how you store the comments. Which plugin are you using?
Regarding the articles: That should be something like that:
Articles: <?php echo page('blog')->children()->visible()->count() ?>
What will you be using as a comment system?
For your articles, it may be as simple as:
<?php echo page('articles')->children()->visible()->count() ?>
This will return the number of sub-pages of the articles page. This needs to ba adapted to your structure
Edit: Lukas is on fire today 
Sorry for the duplicate content !
Thx for the tipps.
I don’t have choose any comments plugin yet. I think about it later. But when this code snippet is only possible when I have choose the comment system then can the answer wait.