This post lists a few general resources on the history of Urdu poetry, the Hindi-Urdu controversy, forms of poetry, technical terms etc.

Rekhta – This is a one-stop-shop for a very large corpus of Urdu poetry.

Lectures by Ustad Ahmad Javaid

SR Faruqi – Early Urdu Literary Culture and History (more English writing by SRF here)

Imre Bangha: Rekhta – Poetry in the Mixed Language: The Emergence of Khari Boli Literature in North India

Platts – A Dictionary of Urdu, Classical Hindi, and English

FWP’s page on Hindi-Urdu Literary History

FWP’s page on Hindi-Urdu Sources

Urdu Meter: A Practical Handbook

FWP’s Index of Technical Terms