Hello @kouba! This is @chillwithshanna from @ocd (Original Content Decentralized) team. We saw that you already posted your first blog here in Hive! Congratulations and welcome!
Seems like you already did some of your research about this platform. For quicker access, check out this link and subscribe to the Communities you like. Share your blogs there to have a wider range of audience or you can check out the Communities Incubation Program.If you are looking for tips and information as a Hive newbie, click here: Newbie guide. If you have questions, you can hop into Discord server and we'll gladly answer your questions.
Also, letting you know since content on the Hive platform is monetized, using other people’s ideas or images could be considered as an offense and which is also viewed in a serious light on the blockchain. Here is a useful collection of resources about how plagiarism and abuse is viewed and handled on Hive.