Important links
Installation guides
Installing Koha on Debian - https://wiki.koha-community.org/wiki/Koha_on_Debian
Installing Koha on Raspberry Pi 2 - https://wiki.koha-community.org/wiki/Koha_on_a_Raspberry_Pi_2
Installing Koha on Ubuntu - https://wiki.koha-community.org/wiki/Koha_on_Ubuntu
Misc
Zotero - http://zotero.org