Do you want to learn something about computer science (beginner or advanced)? computers: hardware, OS, networking, ... software: Office, mailing, Adobe, ... hardware: networking, surveillance, home automation, ... Internet: HTML, PHP, Wordpress, Drupal, ... mobile: mobile phone, tablets, Android, ... programming: C#, JS, Java, ... and many many other domains. I am not equally strong in everything (logical). So feel free to ask for further information. I also help solve certain (school) tasks where I apply the rule: "No solution / No cost". So no risk of unnecessary costs and I sometimes learn something new :-)