Young people can no longer imagine life without their mobile phones and their many apps, even though they often waste time using them. Among the many tips, Lenart J. Kučić and Matjaž Ropret, two experts in the world of technology, will tell us which three useful apps outweigh the cost in terms of privacy protection and are suitable for young people. The creators of the Refreshment Front will also inform us about how not to spoil everything with the first click during social dating and remind us that they used to know only the landline phone.