What softwares could be specifically useful for a student?
Depends on what you want to achieve?? i.e. which field /branch of study. Can you elaborate?
MICROSOFT OFFICE OR ANY OTHER OFFICE
VLC media player.
Great anti-virus software.
A brilliant VPN so you can access content from all over the globe.
adguard - it's an adblocker but it works on all your devices
cram - it's a flash card maker for studying, but you also have access to other people's flashcards which can be useful