The classic reference of this topic is Serre's Algebraic Groups and Class Fields. However, many parts of this book use Weil's language, which I find quite hard to follow. Is there another reference to the topic, using a more modern language (schemes etc.)?



A reference for geometric class field theory?
Have you looked at


1. [Katz-Lang](http://www.math.princeton.edu/%7Enmk/old/AbsFinThm.pdf)
2. [Conrad's write-up](http://math.stanford.edu/%7Econrad/249BW09Page/handouts/geomcft.pdf)
3. [Lang's BAMS article](http://projecteuclid.org/euclid.bams/1183548780)
4. [Ben-Zvi's notes](http://www.msri.org/realvideo/ln/msri/2002/introstacks/ben-zvi/1/index.html) (i seem to remember a video, but i could not find it.) also see [his other lectures and videos](http://www.math.utexas.edu/users/benzvi/Langlands.html)
5. [Thesis of Peter Toth](https://dspace.library.uu.nl/bitstream/handle/1874/206061/TothPeterMA2011.pdf) (follows Deligne's approach)
6. [Kerz's articles](http://arxiv.org/find/math/1/au%3A+Kerz_M/0/1/0/all/0/1) (amazing innovations in class field theory by Kerz and Wiesend); there is also an excellent Seminaire Bourbaki expose on this by Szamuely (in French).


There are many other good references, but hope this can help.


