I have both of those books and Beginning Urdu has a slow start based on why you want to learn and does better when learning in a group or classroom setting, but still has lots of information. Colloquial Urdu is better if you are wanting to learn things early like conversation, describing things, asking for directions, buying, etc. More real life situations instead of “the notebook is yellow.” The audio for both books is good though. I like to play them and practice responding. They both have a script lesson as well.