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Go to http://creator.magicleap.com/

You have to sign up for access, and the number of hoops you have to jump through to get into the site for the first time and see anything at all is kind of annoying... but once you're in, the site is quite good, and generally fluff/bullshit-free. It's almost like the development team hid it to keep it safe from the marketing team's interference. It's a total night/day difference from the "main" site... lots of real, meaty content. Anyone can register, and it's definitely worth the effort if you're even slightly curious.

Big tip: make a special effort to recursively work your way down the "Bootcamp in a box" section... it links to other important sections that aren't necessarily obvious or easy to find from the menu on the left (that was 1-2 months ago... it might have improved since then).

When running the various "Hello Cube" variants for the first time, remember that the real device has a limited field of view where holographic content can go, and the simulator faithfully emulates this behavior. If you don't see the cube, look around the whole virtual room VERY carefully and systematically, sweeping through a 360-degree arc approximately between the floor and ceiling. Chances are, the cube IS there somewhere... it might even be located within the part of the room you can see, but outside the zone where holographic content can be.

You also might be too close to the cube to see it -- anything surface closer than ~18 inches gets culled by Unity, and remember, the INSIDE/REAR surfaces of Unity/OpenGL triangles are normally culled & invisible if you're looking at them as well, so if your virtual nose is metaphorically poking into the cube, you probably won't see ANYTHING at all. If you don't see anything after exhaustively & systematically looking around the room in a 360-degree circle, try stepping back ~4 feet and look around the room again.

Pay special attention to the "Planes" and "Raycast" examples. If your biggest question after a couple of days is, "How do I make sure {something} ends up on the table, or sofa, or a specific area of the floor", it's probably because you haven't worked through the Planes & Raycast examples yet, and as a result you're missing a fairly fundamental point of mixed-reality development. With early augmented-reality development for devices like Google Glass, you could skirt around the problem because conceptually, everything you rendered was being displayed on a ghostly planar surface a few feet away. Magic Leap takes it up a few notches, and allows you to choose the apparent distance of an object, too. With freedom and power comes responsibility... being able to place objects semi-arbitrarily within a room means that at some level, your program has to be at least vaguely aware of what's IN the room surrounding you, and take that into consideration when deciding where to put things. You CAN'T just blindly position objects at arbitrary coordinates & expect everything to "just work"... you have to make sure that you're either putting things where nothing already exists in the real world, or be ready to deal with the consequences OF making ghostly holograms coexist within the same volume of space as a real-world object.

Also, keep in mind that the ML1 semi-passively builds its internal model of a room in the background as you look around. This also applies to the simulator. If something involving planes/raycasting to find surfaces doesn't seem to be finding a surface that you KNOW is nearby, help it out... slowly look up and down around the room, and do it from several vantage points. The more data you give it (by looking around the room in a systematic manner, from different angles), the better its model of the room will be.

Not sure what to make of it. They appear to be a maker of obnoxiously expensive camera bodies and related for Hollywood. I'm still waiting to see why billionaire fools are dumping the huge sums they are into Magic Leap.

Magic leap has been promised for years now

What promises? Are you sure you haven't confused the artificial hype from the countless media stories with actual claims from Magic Leap themselves? They have never publicly announced a release date or a product, and have only ever dropped vague hints about their technology.

Even large companies like google, Qualcomm and Intel regularly invest in things that bomb.

How often do those companies invest hundreds of millions in relatively-unknown startups?

You're thinking of Leap Motion

Magic Leap is AR technology.

Oh ho ho! You just haven't seen the amazing, totally true marketing materials that venture capitalists saw 10 months ago. Holograms are real! Bing Gordon from Kleiner Perkins will tell it to you straight.