Links for Gurbani Research

Various Translations and Dictionaries -

http://www.srigranth.org/

Translations in many languages: 

http://granth.co/

Professor Sahib Singh (Punjabi and Hindi) - 

http://www.gurugranthdarpan.net/

Fareedkoti Teeka of Guru Granth Sahib

https://www.vidhia.com/Fareedkot_Teeka.pdf

Sikhi To The Max (Can search English translation)

https://www.sikhitothemax.org/

Sikh Books:

https://www.sikhbookclub.com/

Sikh Articles

http://globalsikhstudies.net/r_link/articles.htm

Commentaries by T. Singh:

http://www.gurbani.org/

Commentary by Bau ji "Khoji"

https://www.gurbanivichar.com/

Hindu Scripture References: 

Key Upanishad translations from sources:

http://www.vedarahasya.net/vedas.htm

Original Texts:

https://sanskritdocuments.org/