Hi. Now i have some time, to give some tips and howtos

...
here is an easy one, just to try for the begginers

:
- create three copies of the same layer (ctrl + j two times)
- make a middle one desaturated, or use black and white adjustments layer (more control)
- make the top one on "soft light" blending mode
looks nice? then go for some more

:
- make a "color balance" adjustments layer and try to set colors of image to yours taste (starw with red +80 and blue -80 just to see how it works)
- make the new adjustments layer sof light
- play with opacity to taste
want some more? :
- create another copy of background layer and put it on top in overlay blend mode
starting to looks cool? or maybe to much?
- play with opacities, or better use some of masking to show or hide the effect.
That was some of the easy steps

.
Some that requires more practice:
- create luminescence masks from channels R,G,B and use them as masks for previously created layers
- create a new layer and fill from it as luminescence mask (select the best channel ctrl+alt+shift+(1,2,3) - fast shortcut), then play with blending modes (aka Dragan style).
- use levels or curves on masks to get better result and put correction in to highlights or shadows, or anyway U like)
This is just the beggining... combine for best result. When done start d&b.