OK, according to a

video I watched:

Dimension 0 - a non-existent dimension that can be imagined like a single point.

1st dimention is lenght

2D lenght + width

3D = 2D + height, or can be explained by folding a 2D object trough the 3D dimension (ex. if we would imagine an ant traveling down a newspaper is the 2D world, if you fold the newspaper the ant would suddenly disappear from one side of the paper and appear on the other. The 3D is this fold)

4D = the line between the past and the present, thus time. Imagine it like a long snake with you as an embryo at one end and you as dead on the other. We can only see 3D cross sections of this 4D. the 4th dimension is twisted into the fifth dimension (ex. möbius strip - someone traveling along it would see it as a straight line, while in reality it twists into 3D)

5D = the 4th dimension is twisted into the fifth dimension (ex. möbius strip - someone traveling along it would see it as a straight line, while in reality it twists into 3D) A split in 4D, or a multitude of paths that we could branch to in any given minute, made up of different "realities" that are influenced by our choices, decisions and the actions of others... thus multiverse.

6D = folding the 4th dimension trough the fifth... time travel. Jumping from your time to one moment of your past (imagine the newspaper example). BUT - since the previous D is the multitude of paths, you could for example travel back to your past, trigger an additional event that never happened in YOUR timeline, and traveling back to your new present will create another reality. If you fold the 5D trough the 6D this could happen just as instantly as the newspaper example.

7D = treats the entire 6D as if it were a single point. Imagine every single possible outcome since the Big Bang to the end of the "universe" as a single point. For us this would be infinity. If physics allow it, there might have been other, different Big Bangs somewhere out there, each one of them producing different laws and outcomes. If these were all seen as a point, drawing a line between the two "infinities" gives you the 7D.

8D = More than 2 7D infinity points- drawing another line between them (kind of like how we draw 3D with 3 lines)

9D = jumping instantaneously from one 8D line to another (again, newspaper example).

10D = all the possible branches for all the possible timelines of all the possible universes treated like a single point in the 10D. There is no possible place to go from here. All possibilities are contained here.