Augustinus Confessiones commentary and other guide

Latin Learning Latin
1

I am looking for commentary (grammarical) and other guide for Augustinus Confessiones to read easier this work. Can you recommend any?

2

I never read it, but there is this one

3

I’ve got Campbell and McGuire’s edition selections from Books 1-IX designed for college students. Published 1931, 13th printing by Bolchazy-Carducci publishers 1984. There’s a cheap copy available on Abebooks.