Guide for future experts

Since people ask about these things all the time, i figured it'd be a good idea to have one source of information where to get things, this information is in no way complete, take it with a grain (or brick) of salt. I will update it as learn.

To make locations easier to reference i divided the ground and below into 4 horizontal (1-4) and 4 vertical zones (A-D), i will try to refine this system as i go, the zones are laid out like this:

Horizontal (on ground surface): Vertical (below ground):
 * 1) Ocean and Beach - Both edges of the map.
 * 2) Jungle - To the west of where you first start, the backdrop is lot of trees, there is also jungle east of the ruined city.
 * 3) Outlands - To the east of starting point, backdrop is volcanos, dark bare mountains with fire glow behind them.
 * 4) Ruined City - backdrop is desolate crumbling buildings.

A. First layer - just below the ground, first quarter of the depth going down.B. Second layer - between first quarter and half the way down.C. Third layer - between half and three quarters way down.D. Fourth layer - bottom most quarter. Above ground you can find various floating islands. As far as i can tell the map continues just as far above the surface as it does below. I'm sure this information will have to be updated quite a bit as we explore the map.

Resources (most abundant sources): 

Color code: Gathered, Crafted , Salvaged , Chests
 * Sand - Seems evenly spread out in pockets all over underground most abundant resource i found is the beaches on the edges of the map.
 * Tin  - Found by smelting metal scraps or stone.
 *  Wood  - Trees on surface and flying islands, also there are few plants that give wood deep underground.
 * Flower - Any plant on surface or underground that is not a tree or vine.
 * Vine - Bottom side of floating islands (most abundant), ceiling of caves, just mine the square that the vine is hanging from to harvest it.

 
 *  Copper  - Underground layers A and B  , floating islands.  '''
 *  Tar  - In pools on surface  there is lots of it in outlands, and you can find pools of it in caves underground in layers A and B, just use a bucket on any pool.
 *  Iron  - Ground surface, underground layers A-C and floating islands. '''
 *  Coal  - Anywhere where iron and copper is found.
 *  Gas Jar  s  - Use glass jar on large underground plants with bluish-green fog around them.
 *  Water  - Pools on surface, ruined city underground, various caves thru out the map. Ocean on western edge of the map.
 * Green Crystals - Large Crystal Caves below jungle underground layers B-C. Individual crystals can be found thru out the caves below jungle.


 * Blue Crystals - Only source i found so far was salvaging rubble on the floors of ruined city.


 * Yellow Crystals - Same as blue crystals.


 * White Crystals - Only source i found so far is individual crystal formations below ruined city layers B-C. (It is possible to find entire caves made up of those. Once mined you can also mine the back wall and they will give you more crystals)

Electro Anti-Grav - As of version 1.0.5, it can be crafted, found in chests, and sa;vaged from, rubble. Salvaging: Your first bit of salvage comes from your lander, after that you can find rubble on the floors of broken down houses in outlands, and high rise buildings all over ruined city. Beside resources mentioned above, you can get rock, glass, silicone, iron bars, power plugs, regular electric cables, and other common materials out of salvaging. Crystals can be found:
 * Red Crystals - Individual crystal formations in caves below outlands, layers B-C.
 *  Titanium  - Ruined city floors and walls (most abundant), pockets in underground layers C-D.
 *  Illunite  - Small pockets in underground layer D, 1-3 nodes on larger flying islands.
 *  Obsidian  - Underground layer D.
 * Dynamo - Salvaged from rubble in ruined city or in broken down buildings in outlands. Anywhere you get metal scraps. Blueprints also exist, but are a pain to find. Maybe higher tech levels increase the chance of blueprint drops?
 * Modulator - Anywhere you can find dynamos. Blueprints also exist, but are a pain to find. Maybe higher tech levels increase the chance of blueprint drops?
 * Pressure Casing - As of version 1.0.5, it can be crafted, found in chests, and salvaged from rubble in ruined city.
 * 'Sparkplug' - Salvaged from rubble in ruined city and outlands.

That is it for now.
 * In crystal caves (Anywhere in a world, layer C-D).
 * In normal caves as small crystalline growths.
 * Rarely as usual ore, but as 1 block (layer C-D).
 * Blue and Yellow crystals from scavenging in a ruined city.
 * In random chests.

Edit: Added information from TeslaReloaded and DingoDP.

/ru