Instructions
Place a connector inside the end of one of the tubes. Rotate the connector until it clicks and doesn't move anymore. Attach another tube to the connector. Repeat this step to connect tubes to each other and build shapes out of it.
Build a square frame using medium-sized tubes. You can use whatever connectors are most appropriate for your model. Place the square face down over the bottom of a panel, also face down. Click the panel clips into place to hold the panel down. Place the panel clips on the left and right sides of the square.
Slide the orange gripper connector around a pipe, then attach that pipe to your model to create a moving joint. This could be used to make the handlebars for a bike or go-cart.
Slide a wheel onto an axle piece. Attach the axle hub to the front of this. Connect this piece, using a connector joint, to your model to add a wheel. Repeat at least once more to make an axle.
Break the model down when finished, using a "pipewrench" tool. Insert the post on the inside of the wrench into one of the knob holes on the side of the tube, where the connector meets. Push the tool down so it clips around the tube. Pull the connector out of the tube.