How does gaining Hero Experience work?

Could you explain in detail when my hero does and does not get experience?

• killing
  • I assume I get experience for everything I kill with my bare hands. Including global skills (like natures prophet)
• minions
  • Everything that gets killed by an minion of mine. (chen, enchantress, broodmother, ..) gives me xp, no matter how far away my hero is (or if he is alive)
• creeps
  • Do I get experience for enemy creeps killed by my creeps? Or do I have to assist the kill to get experience?
  • What is the experience radius? I often read about keeping the enemy away from creep xp, how far do I have to push them back? what about denies?
• turrets
  • Do I get anything from kills by turret?
• heroes
  • How much experience do I get for a kill and / or assist? Do I have to be in "experience range" to get assist experience?
• being dead
  • Does this unique state has any influence on getting experience from minions?

Solution 1:

From the Dota 2 wiki:

Experience in DotA 2 is given by a unit on the enemy team that dies.

• Experience is equally shared by all allied heroes in a 1500 range.
• Hero kills outside of 1500 range will give experience to the killer. (I.e. Sniper's Assassinate, Invoker's Sun Strike, Zeus' Thundergod's Wrath or any summoned unit - Lone Druid's Spirit Bear, Nature Prophet's Treants, Broodmother's Spiderling and Spiderite)
• Denying an allied Hero does not grant experience to the enemy.
• Denying lane creeps grants 25% of their usual experience to both the enemy and the ally.
• Denying a player-controlled unit does not grant experience to the enemy or the ally.
• Neutrals killing lane creeps is considered the same as the enemy creeps killing them—it's not a deny, and gives full XP. You must deny the creep yourself to deny its XP.
• Neutral creep deaths grant experience to any nearby hero, regardless of the team that gets the last hit.
• Heroes take their share of experience even after level 25, even though they cannot use it.
• Observer Wards grant 100 experience when killed
• Ancients and Roshan acts as Neutral creeps with shared experience to all heroes within 1500 radius
• Bounty Rune grants experience to the hero that activates the rune (25 base exp + 7 exp/min)
• Hand of Midas active ability grants 185% of the transmuted creep's experience bounty to the hero that activates the item
• Tome of Knowledge active ability grants 500 exp to the hero that activates the item plus an additional 135 exp for each tome used by the team.

Solution 2:

Its important to note that if the hero is under the hex(Sheep) effect they gain no experience.