you are right, the beauty of these strategies are on listening.

many available theories on how to improve spoken english.

some linguists believe, pronounciation first

others believe, intoantion first,

still others believe, do them both at the same time.

in fact, majority ESL speakers start with pronoucition first as the start point, because they are more managable.

the ZTed article is aimed to facilitate those who already understand the rules of proucination and want to improve their intonations.

thank you very much for your comments, it is also a common concern for many people who are sure where to start in ESL learning.