A THREAD FOR NEWCOMERS!

Hello everyone. I decided to write in this thread because it seems to be the right one. I haven't played Heroes for a long time, and even then, it was on a weak computer. Now I found this site and saw a couple of Heroes streams, and I wanted to play online. But my skill level is too low, and I don't know much. How can I train for online play? I'm gradually reading the forum. Thanks in advance.

Don't be afraid and just start playing. You can use the HD mod – it helps a lot when you don't know the game mechanics well. You should also study FizMig and watch VODs (or streams) of good players, specifically on the template you plan to play on. This is very important.
Watch Ichthyander's video on taking Necropolises.
Practice taking Necropolises, Gnomish Strongholds, and other buildings.