One of the functions that are typically used on the Pi is the file server by FTP. I tried to collect links of how to install and configure.
I'll update the post in the future if I found tutorials with more quality.
ducky-pond.com > How to setup an FTP server with vsftpd on Raspberry Pi
resources.intenseschool.com > Turn Your Raspberry Pi into a TFTP Server
thelinuxguy.nl > How to create an FTP Server with Raspberry Pi and ArchLinux ARM/Linux
eeweb.com > The Raspberry Pi Part IV: Setting up a Simple Server (Arch Linux)
russelldavis.org > Setting up sftp on the raspberry pi (and on other linux systems)
reviews.cnet.co.uk > How to make a Raspberry Pi solar-powered FTP server
es.wikihow.com > Cómo hacer un servidor web Raspberry Pi
geekytheory.com > TUTORIAL RASPBERRY PI - 9. SERVIDOR FTP