The Portuguese Safer Internet Centre's notebook, brings together a range of tips to promote responsible and safe use of the internet. Divided into nine areas, ranging from digital parenting, online risks and behaviours, digital threats and vulnerabilities, illegal content, online rights and privacy, online games, disinformation and truthfulness of content, platforms and applications, and technologies and services related to online communication, this booklet was developed based on the "I want to know" page available on the project website.