I have used Tetenal C-41 kit 1l extensively. Developing colour film is not harder than developing b&w film.
The only important difference is the working temperature. You got to keep it at 38C for C-41. Follow the
instructions to mix chemicals with water and you get Developer, Blix and Stabilizer. After you get the
chemicals ready and warm them to 38C do the following:

1. Rinse for 1 minute
2. Develop for 3 minutes and 15 seconds
3. Blix for 6 minutes and 30 seconds
4. Rinse for 3 minutes
5. Stabilize for 1 minute
6. Short rinse and dry

(Agitate as if you're developing b&w film.)

and that's it. Take care that not a drop of blix ends in developer as it would spoil it.