Difficulty level: 
Meaning of colors: menu path, keyboard shortcut
Removing objects from photos
Used graphic application:
Adobe Photoshop 7
When moving the cursor above the image on the left - the image before the processing appears.
1. Open the Photoshop program.
2. Open the photo purposed to processing.
File » Open or Ctrl + O
or by double clicking the left mouse button on the dark grey application background.
3. Choose the Clone Stamp Tool 
(S) from the toolbox ... and don’t put it away to the end of work.
It is the tool that is very smart and useful in many situations. Using it we clone the picture and move it to any other position.
Let’s start from the beginning. Choose the area on the right side of the head of the person that we are removing from the photo (about two centimetres from it) - let the horizon line is our target. Move the cursor to that place and press the Alt key. Cursor turns into a viewfinder. Take aim at the horizon line and click the left mouse button.
Release the Alt key. The place from which the picture is to be cloned was marked. Move the cursor (circle) towards the figure, a few millimetres right from its head. Set the cursor in the way that horizon line is running across the centre of the cursor.
Press the left mouse button and paint over (like using the brush) the head of the person in background. Instead of paint (colour) we’re painting using the picture moved from the right side (from the place that we cloned it). The cross next to the cursor (circle) informs us about from where the picture is cloned at the moment.
Simple rule: Alt key pressed - cloning, Alt key released - drawing.
It is not an easy task. You have to practise some time with that tool to get into stride. The place from which you are cloning picture and the place to which you are moving it are both important (distance, angle, direction). The best way is to use natural lines, colours boundaries and similar paths.
Since we are working on a small area - it is the best to do everything under the big zoom.
On that occasion we can clear the beach up from cans, sticks and other unwanted things (still using the Clone Stamp Tool).
I recommend to see that tutorial on the film, where everything is better visible so the learning is more intuitive.
Ready (move the cursor above the photo).
The end.
photo retouch
Changing lips colour that is a virtual lipstick
photomontage
Tatoo
other techniques
Picture in sepia