In Algodoo you can create your own world of things that collide, bounce, swing, run, drive, fly and flow. To get started you can go to the File/Load scene menu and load some examples to play with.

Under the main menu bar is the toolbar. Try the tools one by one to learn how they work. Below the toolbar is the simulation bar. First comes the undo/redo-buttons and then the play/pause button. To zoom in and out, use the zoom slider, drag the zoom button, or use the scroll wheel on your mouse. To pan the view, drag the pan button or drag the background with either your right or middle mouse button.

You can select objects by clicking them. You can then move and drag the selected objects. To select several objects at once, encircle them with the polygon tool or the box tool.

Erase objects by drawing a straight line over them with the polygon tool, or just select them and press 'delete' in the context menu.

Don't be afraid to play around, anything you do can be undone by pressing the undo button or by pressing control-z.