My GIMP stuff (Soon)
If a layer's name in the Layers dialog is displayed in bold, this layer doesn't have an alpha-channel. You can add an alpha-channel using Layer-->Transparency-->Add Alpha Channel.
You can adjust or move a selection by using Alt-drag. If this makes the window move, your window manager uses the Alt key already. Most window managers can be configured to ignore the Alt key or to use the Super key (or "Windows logo") instead.
GIMP supports compression on the fly. Just add .gz (or .bz2, if you have bzip2 installed) to the filename and your image will be saved compressed. Loading compressed images works also.
Dragging a layer into the toolbox will create a new image with only that layer.
If you are using a drawing tool (Paintbrush, Airbrush, or Pencil) then Shift-click will draw a straight line from your last drawing point to your current cursor position.
Shift+ Ctrl+ E fits your image in the window.
Click and drag on a ruler to place a guide on an image. All dragged selections will snap to the guides. You can remove guides by dragging them off the image with the Move tool.
You can get context-sensitive help by pressing the F1 key at any time. It also works inside the menus.
If some of your scanned photos do not look colorful enough, you can easily improve their tonal range with the "Auto" button in the Levels tool (Colors-->Levels). If there are any color casts, you can correct them with the Curves tool (Colors-->Curves).
Write the language you want to work with in the set lang command, ie: fr, de or sp for French, German and Spanish respectively. Check that both the path to the bin folder and the exe name in your system are correct. Then, save and close the file. Now, just double click the .bat file. Done...
a)In Linux: set the LANG-environment variable to "en" from the command line.
The "Background" layer is special because it has not transparency. This prevents you from moving the layer up in the stack. You may add transparency to it by right-clicking in the Layers dialogue and selecting "Add Alpha Channel".
To open the layer dialog press Ctrl + L.
To open more than one photo: select and drag your images from your file manager to the main GIMP windows.
To pan around the image use the middle mouse button(also hold Spacebar while you move the mouse).
You can import a palette from an image. Open your image, then the palette dialog by pressing Crtl+P. Now open the Tab-menu. Then Palettes Menu --» Import Palettes.
-Q-You can use the paint tools to change the selection. Click on the "Quick Mask" button at the bottom left of an image window. Change your selection by painting in the image and click on the button again to convert it back to a normal selection.
If you are going to transform (rotate, etc) your image, do it before scaling it down. Remember that transforming means lossing quality.
If you stroke a path (Edit-->Stroke Path), the paint tools can be used with their current settings. You can use the Paintbrush in gradient mode or even the Eraser or the Smudge tool.
Pressing and holding the Shift key before making a selection allows you to add to the current selection instead of replacing it. Using Ctrl before making a selection subtracts from the current one.
You can save a selection to a channel (Select-->Save to Channel) and then modify this channel with any paint tools. Using the buttons in the Channels dialog, you can toggle the visibility of this new channel or convert it to a selection.
To know what a tool does, keep your mouse over it. You will see a tooltip text with a short tool description.
Use the native GiMP format XCF. It preserves layers, etc. Later on you can save your file in JPG etc.
To zoom in and out use the + and - keys. To make a 1:1 zoom press 1.
Drop me a line: I´ve a gmail account and my name there´s ilovethegimp. Update: February 11th, 2008.