There's tonnes of fantastic resources on youtube. Personally I recommend a channel called Renaissance Periodisation. They have a number of videos of people demonstrating various machines, and then more in depth videos on how to fix common technique problems. For routines, there's a website called boostcamp.app which has tonnes of routines put together by the community for beginners and up. Source: about 1 year ago

I suggest downloading the Boostcamp app which does this all for you automatically: https://boostcamp.app/. Source: over 1 year ago

If you don't use exercise.com what do you use? Source: over 1 year ago

These are all features that the exercise.com should offer...... But they don't. Source: over 1 year ago

It doesn't seem that severe tbh. They payed quite some cash for him to come work for them at exercise.com, another website they were developing at the time and he dropped out after 9 months to work full-time on Lichess. Some grudges were held but this was not about either website and it was a long time ago. Source: about 2 years ago

In short: Erik Allebest hired me to work on exercise.com, after I had started working on Lichess. I never had access to any code or intel from chess.com. I left exercise.com to work for startups unrelated to chess for 6 years, before Lichess hired me as full-time dev. Source: about 3 years ago