The principle behind CSE CMS is quite simple:

After installing the script, you just create at the root level as many folders as languages you would like to support.

For example, assume you want english and french:
www.mysite.com/ - home directory
www.mysite.com/en/ - home for the english part
www.mysite.com/fr/ - home for the french part

Now within those folders you build you site by placing folders for the desired content categories.

For example, in the english part:
www.mysite.com/en/Fractals/ - content category titled "Fractals"
www.mysite.com/en/Fractals/Mandelbrot/ - subcategory of "Fractals" titled "Mandelbrot"
www.mysite.com/en/Fractals/Julia_sets/ - subcategory of "Fractals" titled "Julia Sets"
www.mysite.com/en/Travels/ - content category title "Travels"
...

Now you place in the folders your text documents (html) containing the effective content.

For example, in the Travels:
www.mysite.com/en/Travels/My_trip_to_India - a text file that describes you trip to the Taj Mahal
www.mysite.com/en/Travels/A_brief_hop_in_China - another text file that describes you 3 day-hop in Beijing

Each of those text file contains in html the actual content of the page, for example in My_trip_to_India:
I traveled a <i>long</i> time before I arrived in the airport of <a href=http://www.mumbai.in>Mumbai</a>.<br> The climate was....

That's all, CSE CMS has enough to publish a website!