You all do not know me here because this is my first post here so I'll tell you all a bit about myself to start off. I've started to develop Java first a while back and since then I'm more into web development, especially PHP since Ruby and Python aren't really my preference. And since I need my calculator which is a Ti-84 Plus, I was interesting in the built in programming language. After some playing around, I noticed it was a slow and not a very wide language if you know what I mean. So I looked up if some other languages existed for the Ti family and came across some and Axe looked the best.

But the simple programs I got on my calculator give quite a few errors and I looked all across Google to find my answers and I really can't find them. That's why I signed up here, to get my questions answered and get into Axe. My first question is how do I define a list in Axe, I'm used to using dim( in Ti basic and List or Array in Java, but don't know how Axe works yet.

Welcome to omni ! Have some peanuts, straight from the factory.

To answer your question, there's no list in axe. You just handle data directly with pointers and stuff. You should look at some tutorials (there are a few here).

you don't need to define a list in axe.

You have 6 memory locations you can use that vary in size and dangers. L1/L2/L3.../L6
You can access these locations with the "{" and "}"
For example {L1 + 4} would access one byte of RAM at location L1+4

You can easily use this to make a list.
for example. if you wanted to make a list of  10 random one byte numbers, you could do this

For (A,0,9)
Rand^256 -> {L1 + A}
End

hope i explained that well enough.

Rand makes a random number between 0 and 65535 i think.
^256 is modulus (you don't really need it as it'd only save 8 bits to that location anyways, but o added it to... um not sure why i did)
A is a variable
{L1 + A} is a changing memory location as A is changing.

Can you explain to me how I can access it, for example when I would build a snake game I would need to store the locations of the snake to delete and calculate the next position.

So to store something into RAM, you simply store into the memory location with a pointer (in code, X -> {L1+4} would store X to that value)

So instead of accessing something like L1(5), you access the fifth byte with {L1+4}. The other stuff carries over from TI-Basic, mostly, except that you're only storing a byte. If you want full 16 bit values (up to 65535) you simply add the ^r after the curly brackets like this: {L1+4}^r
Also, one more thing. L1 is just a pointer to a free piece of RAM. It's not a list, and if you allocate more RAM for yourself or write into program data, you can use that too. I remember seeing something here about pointer arithmetic... see http://axe.eeems.ca/Documentation.pdf, page 13

So I cannot define a specific length to it, I need to know how long I will make it? I think I got it.

Can I make an integer or double or whatever in Axe and call it whatever I want?

Dreeass: you can store whatever you want, wherever you want. However, if you store something into the TI-OS RAM area or some other unsafe place, or you treat a pointer as an integer or a fixed point number as a float or even a signed as an unsigned, you get no warnings. Everything will just break or act unexpectedly. Java and TI-Basic are at least nice in that respect, but you get something more like C here. (and a good thing too, it's faster ) I recommend writing down what you're storing and where.

Can you link me to a basic guide on Axe if there is one?

I recommend writing down what you're storing and where.

Really ? I never write anything down when coding, could it be Axe, ASM, TI BASIC or computer.