3.2. Insert Mode

Making corrections from Insert Mode

This works in the bash shell as well.

<C-h> # delete back one character
<C-w> # Delete back one word
<C-u> # Delete back to start of line

Switching between Normal mode and Insert mode

<Esc>
<C-[> # to Normal mode
<C-o> # to Insert Normal mode
<C-c> # same as <Esc>
gi # switches to insertion mode placeing the cursor at the same location it was previously. 
g; # jump to the last place you made an edit

To paste text in inserting

yt, # yank till ,
jA # move down and Append a spece. Note a space after A
<C-r>0 # to paste the text which yanked. Register 0 is for yanked.

You can use a regster to yank. <C-r>{register}.

<C-r><C-p>{register} inserts text and fixes any unintended indentation. See :h i_CTRL-R_CRTL-p. But it is better to use registers.