https://www.smashingmagazine.com/2016/09/how-to-design-error-states-for-mobile-apps/
Acitvity Trackers (Google Chrome Browser Plugins)
Webtime Tracker (download link)
Web Activity Time Tracker (download link)
It allows to set a daily limit for every website:
Best choice: ActivTrak https://activtrak.com/ all-in-one desktop/laptop, mobile and web-surfing activity tracker and control.
Programming skills
List of great resources
Pricing
- Types of pricing models for SaaS (article)
List of great resources related to Marketing, Copywriting and PR
- SEO Step-by-step strategy / SEO Checklist for 2019
- YouTube SEO (article)