That is one person's suggestion. I suggest learning C++ strings before learning C style strings. Both will work, you don't need to have specific reasons, I just think it is better to use the string class unless you do.
Learning the C++ way first instead of the C way is a common suggestion among C++ experts that I happen to agree with. Check out Stroustrup's paper on learning C++ as a new language for the opinion of a more well-known programmer than me.