Information dealing with Treaty on Wikipedia:
https://en.wikipedia.org/wiki/Treaty_on_European_Union

Explaining the Treaty of Lisbon as a baseline for this Treaty:
http://europa.eu/rapid/press-release_MEMO-09-531_en.htm?locale=en

Treaties currently in force:
http://eur-lex.europa.eu/collection/eu-law/treaties-force.html?locale=en