There are 12 Choral numbers PLUS 4 for Tenors and basses only.
Fortuna Imperatrix Mundi: 1; 2
Primo vere: 3; 5
Uf dem anger: 7; 8; 9; 10
In Teberna Nos 12; 13 & 14 are for Choir Tenors and Basses only
Cours d’amours: 18; 19 (Tenors and Basses only); 20; 22;
Blanziflor et Helena: 24
Fortuna Imperatrix Mundi: 25 (a repeat of No.1).
Here are some links to online rehearsal aids.
The best: American rehearsal recording, with live soloist singing your line (with words) and choir and orchestra in the background. The faster movements are additionally recorded a little bit slower to facilitate learning. Available as CD (by post from USA) or as MP3 download. Each voice part costs $12.80.
Then there’s Cyberbass, which you access online.
Advantages: It’s free; and you can slow down as much as you like.
Disadvantage: There are no words, just a piano playing your line with distant electronic accompaniment.
There are recordings of individual movements and individual parts on Youtube, but I don’t know if all are available, and this one has no text,
Here is a link to a Translation of the entire text http://www.austinsymphony.org/files/Carmina_Burana_translation.pdf