there isn't an answer to that its personal prefrence
You can buy a starter set for $14 called the Dungeons and Dragons 4th edition starter set. $29.99 in stores.
In 4th edition Dungeons and Dragons there is a humanoid race called: Dragonborn which are scaly and bipedal and can blast enemies with an elemental breath weapon.
Short answer: No. Everything can of course be converted, but both the ruleset and the worlds are vastly different.
That depends on if you want to be a mindless sheep giving in to the money trap of 4th edition. If you actually want to have fun playing D&D, buy 3rd edition. 3rd edition is out of print, however, and because of that I would advise Pathfinder (a 3ed spinoff that is actually better than 3rd).
Bloodied refers to the status of a character in 4th Edition Dungeons and Dragons when the current hit points (HP) drop below half the maximum hit points. Ex A Goblin with 23 hit points at full, would be bloodied at 11 hit points or less. Some abilities trigger when a character or monster becomes bloodied.
Yes, you can use any kind of minis for D&D. However, that rule may have been changed in 4th edition, because it isn't profitable to Wizards of the Coast.
The most likely places to find copies are eBay and used book stores. A few game stores, including some online retailers like Noble Knight Games, also sell out-of-print role-playing games. A lot of out-of-print D&D products were available for purchase in PDF form online until Wizards of the Coast decided to abruptly pull all PDF sales after catching a group of pirates distributing a newly-released Dungeons & Dragons 4th edition book. It is no longer possible to legally give the copyright holders any money for old D&D products. It's important to know what you want. There are three different games that could arguably be called "Dungeons and Dragons 1st edition": Advanced Dungeons & Dragons (AD&D) 1st edition (consisting of a large number of books and boxed sets published between 1977 and 1989), the original Dungeons & Dragons Basic Rules (a rule book and a boxed set including the rule book, both published in 1977) and the original Dungeons & Dragons game (a box with three rulebooks published in 1974), sometimes called the "Dungeons & Dragons Collectors Edition." AD&D material is widely available. The original Basic Rules are harder to come by. Original D&D rules sets are easy to find on eBay but usually go for somewhere over $500.
I would recommend the 4th Edition Players Handbook. 4th Edition is the latest version and has been simplified a bit to help encourage new players. This would make a good starting place. 3.5 Ed. Is more complicated but many players like it due to a greater range of options in gameplay and character creation.
No, half-fiends are formed from a union between a fiend and a humanoid. A fiend cannot reproduce with an Outsider such as an angel, and the union between a half-celestial humanoid and a fiend will simply produce a half-fiend.
No. This has been confirmed by Wizards of the Coast. "1. When using tempest dance (Martial Power, page 9) do I need to pick a different target for each attack? Yes (that's what "against a second target" means)."
The current edition of Dungeons and Dragons has seen a recent resurge of popularity due mostly to an aggressive marketing campaign by the title owner, Wizards of the Coast, followed by strong content support both online and through continued title publication. While exact numbers are difficult to obtain, Wizards of the Coast has a reported annual sales of over 120 million dollars, though the company produces many titles of which Dungeons and Dragons is but one. Recent estimates indicate that more than 4 million Americans play Dungeons and Dragons. It is worth noting, though, that the changes implemented in the 4th Edition of Dungeons and Dragons received mixed reviews among long-time players of the gaming system, with many claiming that the new rules system felt more like a video game than the role-playing game they'd grown used to. Many of those people switched to a rules system from Paizo Publishing called "Pathfinder", which was largely based on the "3.5" Dungeons and Dragons rules, with some improvements. Other gaming systems, more a throwback to the original Advanced Dungeons and Dragons rules, such as Castles and Crusades, also saw an increase in popularity as old-school gamers looked for rules systems that felt more comfortable to them. As evidence of this growth in Pathfinder popularity: In 2010 at GenCon (the dominant RPG-heavy gaming conference), D&D had 431 events and Pathfinder had 169. In 2011, D&D's numbers were largely static at 455, but Pathfinder had increased dramatically to 276. Similarly, Wizards of the Coast's "presence" at GenCon has felt diminished over the past few years, while Paizo's has definitely increased.
The older codexs are compatible with 5th edition. Some armies lost a bit of their usefulness with some rules being dropped, while some got better.