Topics merged.
It's great that you're trying out things, but it is really not necessary to post similar findings many times.

It is only an entry point, you should search yourself a bit more.
At Maniapark there are lots of tutorials.

There are different possibilities. Some have been successful with Blender, others use the now built-in tool. It depends a bit on what you want to achieve. There are also some information and tutorials around (check the maniapark website for example). Very basic information here: Maniaplanet document...

Ok. This would restrict the usage to items in first place. For embedded custom blocks or even official track blocks, the core engine might need modifications to allow multiple lightmaps for specific areas - where blocks are moving. Note that there is already the dynamic daylight, but this always aff...

Actually it does.
What do you mean exactly?

Other double post removed. Here is probably the better place.

Also check the game setting "number of visible oppenents" in the Launcher.

In the help menu of the editor, there is a "show helpers" / "hide helpers" setting, but apparently it only displays a horizontal grid at the cursor location or not.
Could the block helpers perhaps be connected to that setting?

Two new tutorials added:
How to use the new deformation tool
How to create a portable ManiaPlanet installation

And the Trackmania Telemetry Monitor

Le serveur marche en local... Sur le même PC ?