Basic Signals   Exercise scope: Questions 1-5

Impulse Response Exercise scope: Questions 1-3

Fourier Series and Transform
Exercise scope: Questions 2-5 Part 1, Part 2 

Z-Transform I. Signal and its z-transform
Exercise scope: Questions 1-3Part 1, Part 2 

Z-Transform II. Poles and zeros: 
Exercise scope: Questions 1-3 Part 1, Part 2 

Z-Transform III. Filter Design: 
Exercise scope: Questions 1-4Part 1, Part 2, Part3

Discrete and Fast Fourier Transform
Exercise scope: Questions 1, 2, 3, 4a-c, 5, 6 Part 1, Part 2, Part 3