text style in Photoshop

i'm looking for a very simple text style in PS... too complicated for it lol.
basically i want a way to create/edit/deleted text style, like i do in word. yes PS is not a word processing tool, but so little think...

what i want to be able to do is :
1) select a text with a style i made. save it at a text style.
2) select an another part on the text (can be a letter only, anywhere in the paragraph), and apply the style of 1).
3) redo the step 2) very fast and easily using "redo" action / short cut keys.

for now on, i'm doing it all manually. what a waste of time !