Select menu "Circuits" and click over a preinstalled circuit. You can add your circuit to this menu later.
For startup your own circuit, Select menu "Circuit" -> Blank Circuit at bottom. Click "Reset" checkbox at top right for edit circuit.
Now you can make right click over blackboard to add components.
Click and Drag to positioning the components. Repeat step 3 and 4 for add more components and connect between with Wire(w) to complete the circuit. Right click over components for adjust values.
Right click and select "Select/Drag Selected", Click and Drag over blackboard to select all components and move everywhere.
When complete, Click "Reset" button at top/right to start circuit
The circuit is On. Now you can click menu "File"->"Export Text" for save circuit for later.
Copy the text with right click -> copy over the text selected. Now, you can save with the Notepad to your HardDrive or share in forums, webpages, internet, emails, etc.