Years ago I had to learn Morse, here are some tips I was told to help.
Start with the easy ones, we all know SOS … _ _ _ …
Then the 1 and 2 dot dashes
M _ _
N _ . and A . _ are symmetrical
The the 3s
O and S we already know ^
K _ . _ and R . _ . are "inverse" of each other
U . . _ and G _ _ . again Inverse also U sounds like V (later)
W . _ _ and D _ . . inverse
The 4s can be the easiest, you have longer to think about it
C _ . _ . think CHAR lie CHAR lie (capitals = dash say these long. small = dot)
F . . _ . did it HURT you (adult mind required here)
L . _ . . it HURT like ell
Y _ . _ _ YO ko HA MA
X _ . . _ and P . _ _ . inverse
H . . . .
and my favorite V . . . _ dum dum dum DUMMM from the longest day film
Z _ _ . .
B _ . . . and J . _ _ _
have I missed any?
Hope that helps some. Best to learn it in pairs of letters and get use to the "sound" of it