2.23 explain electrostatic phenomena in terms of the movement of electrons

This is quite confusing and may need a few reads to fully understand...

The movement of electrons is responsible for all phenomena relating to current electricity. However, electrostatic phenomenon, such as electrostatic induction , is the transfer of electrons from one body to another.

For example, polythene and cloth. When they are rubbed together, the rod will gain electrons and become positively charged and the cloth will lose electrons and become negatively charged.