Not had a chance to read through the multitude of pages, but when I learnt morse I found it useful to break the alphabet down into groups of logical sequence.
For example
T -
M --
O ---
E .
I ..
S ...
H ....
A ._
U.._
V..._
A good aviation one!
N -.
D -..
B -...
then some of the others make pairs, for example
W .--
G --.
Q --.-
Y -.--
L .-..
F..-.
J .---
K -.-
R .-.
P .--.
X -..-
then there are tho odd ones
C -.-.
and
Z --..
Just found breaking it down like that helped to make it manageable! The only way to get good at recieveing it is to listen to it time and time again. I learnt it 10 years ago and have hardly used it since, and yet I can still read quite happily at 12 WPM if necessary, truly a skill for life!