Ask HN: What are your tips for improving online communication?

These days a lot of work is done through video conferences and meetings.

What are some tips that online meetings are less painful for other people? I believe programmers should also put some efforts on speaking well. The obvious answer is practising, but what exactly? Stick to ideas on verbal skills, presenting and clarity on the online meetings. I've seen "Patrick Henry Winston - How to speak" and "Edward Tufte - The cognitive style of Powerpoint".

Any other seminal resources and your own tips on speaking and presenting in the online systems?