It is showing " Learn about Gradient Tape and More". Do I need to see the course about tensorflow to learn more about tensorflow or in later courses of deep learning specialization, I will learn more about tensorflow.
DLS C2 W3 is just the introduction to TensorFlow. As you go through DLS C4 and C5 you will continue to see more advanced ways to use TF. Note that DLS C3 is not a programming course.
Then once you finish DLS, you can take the various TF specializations to learn even more about how to use TF effectively.
Of course there are many ways to learn more about TF. The TF website has lots of good tutorial material, in addition to the detailed documentation. That would be the recommendation if you have questions as you proceed through the DLS courses.