How to check if a comment is from a human:
There are several captcha variants out there for drupal. I use draggable captcha, as it is nicer than trying to decipher numbers or letters.
IMAGE OF DRAGGABLE CAPTCHA
Using the statistics filter module to show the most viewed articles and to show a counter how many people have clicked on an article.
In Matlab saving a figure as a pdf results in a rather bad quality. It is better to save the figure as .eps and convert it to .pdf, e.g. in Linux via the terminal tool
NOTE, especially if the .eps file is in landscape orientation, the terminal tool ps2pdf does not work properly and cuts off pdfs in portrait orientation.
A very good introduction. I only wish to add some minor things.
When copying all the files to your webserver (e.g. via ftp) make sure you also copy the hidden files
If you don't copy .htaccess one thing that will not work is clean urls, see https://www.drupal.org/getting-started/clean-urls, section "Enabling Clean URLs in Drupal"
If you prefer having static URLS, e.g.
instead of dynamic URLS, e.g.
you have to enable "clean urls" in admin > settings. Hence navigate your browser to
and click on