Watched two videos about z, c, and s pronunciation and practiced them using 1st tone only. I generally practice the other tones too, but these letters make me feel overwhelmed so easily x.x

I didn't give up so I kept practicing z, c, s with other video series, and I like them so much that I practiced again b, p, d, t with them as well. I practiced zh, ch, sh and r too.

Practiced pinyin letters g, k and h

Practiced pinyin letters t, n, l

Practiced pinyin letters m, f and d

Practiced pinyin vowels, and letters b and p