Moreover, I'd like this portal to let users comment other posts. This website is going to be overview of students project (each one - user's consisting of a projects name, description and attachments). In the future, I'd like the posts to be grouped in categories and subcategories, but that's not the most important thing, as I'd like to make this portal functional asap (letting users fill formula and publish them after acceptance).
Please recommend me software that would help me do that. Which programming language is most suitable for that kind of datebase? Do you have any kind of software with free educational licence that would spare me efforts of applying this solution to my website? Do you have any other tips for me? I'd be grateful to see from you.
If you specify a bit more as to what technologies you might want to use, we may be able to assist you better.
As for web apps, I recommend Django (https://www.djangoproject.com/) most of the time.