Step 1: Select disk and analyze it
In the top left corner of the program window there is a list of all local drives available on your system. Select the one that contained the lost file or files. Now click the "Analyze" button on the toolbar. Handy Recovery will start analyzing the content of selected disk. This procedure is needed to find links to all deleted files and folders on the disk. Unfortunately it is impossible to go right to your file until the whole content of the disk is analyzed, so the procedure will take some time.
When analyzing, the program will display folder tree in the left view of the window. Newly found folders will be added to the tree. You can stop the process by clicking the "Stop analyzing" button on the toolbar, however it is recommended to wait until the process is finished and the full folder tree is displayed.
Next step is to find the lost file.