To create you first animated gif, you need to add at least two or more new frames to it. To do so, click the ‘Add frames' 
button on the Toolbar and, in the ‘Open' dialog window, locate the source file you want to add and click the ‘Open' 
button. The selected image is placed as frame #0 in the Frames area of the main window. Repeat the same sequence of steps to add as many new files as you want. More…
You may also add the contents of the clipboard as a frame. To do it, just select and copy some image and click the ‘Paste' 
button or press Ctr+V. More…
Alternatively, you may choose to import AVI file as a sequence of frames. To do it, in the Main menu, choose ‘File->Import AVI…' and, in the ‘Import AVI file' dialog window, locate the source file you want to add and click the ‘Open' 
button.
You can always change the order of frames by simply dragging them to the new sequence location in the ‘Frames' area. To move frames forward (up) or backward (down) by one frame, press Ctr+U (up) or Ctr+D (down).
To delete the frame, select it by clicking on it in the ‘Frames' area and click the ‘Delete' 
button. To duplicate it, use the ‘Duplicate' 
button.
To select multiple frames, hold ‘Ctrl' button and click the frames you wish to select. To select all, press ‘Ctrl+A'. You can apply such commands as: ‘Delete', ‘Cut', ‘Copy', and ‘Paste' to any number of selected files simultaneously.
To set the number of animation loops (from 1 to infinite), use the ‘Number of loops' option in the ‘General GIF settings' 
. More…
To set the delay time for each individual frame, select it and choose the corresponding value in the ‘Delay time' option in the ‘Frame settings' 
. To use the selected delay for all the frames, click the ‘Apply to all' 
button. More…
At any time, you can preview the animated GIF by clicking the ‘Play' 
button. To stop the animation preview, click the ‘Stop animation' 
button. To preview the GIF in the default browser, click the ‘Preview in browser' 
button. More…
To reduce the size of the created file, click the ‘Optimize gif' 
button. More…
To save the created animated GIF, click the ‘Save gif' 
button and give a name to the new file in the ‘Save As' dialog window. To access and edit your saved GIF in the future, use the ‘Add frames' 
button and select the animated GIF file you previously saved.