I am writing online for about three years now (two in English) and I picked some knowledge by the way. I am not one of the gurus who know all, but just a regular guy who managed to get from 'clueless' to 'several thousand unique visitors a day'. Let me share some (but not all) of this knowledge with you, so you can have better start with your online projects.
For your convenience I created step by step cheat sheet to follow which can be used in all web related writings.
Here we go with my top 10 how to write online tips:
(all used images are PD and RF, sources Pixabay and Wikimedia)