Learn Turkish: Burada köpek var, korkma. - There is a dog here, do not be afraid.

To make a negative command for "you" (singular and informal), you take the verb root and add the negative suffix -ma or -me. The root for "to fear" is kork-. Because of vowel harmony (the 'o' in kork- is a back vowel), we use -ma, giving us korkma.

Why isn't there an extra ending on korkma to show who I am talking to?

In Turkish, the "you" (singular and informal) form of the imperative doesn't take a personal suffix. You just use the verb root for positive commands (like kork for "be afraid") or the root plus the negative suffix for negative commands (like korkma for "don't be afraid").

Does Burada köpek var mean "The dog is here" or "There is a dog here"?

It translates best to "There is a dog here." The word var means "exists" or "there is." If you wanted to say "The dog is here," you wouldn't use var. Instead, you would say Köpek burada (literally, "Dog at-here").

Why does "here" translate to Burada instead of just Bura?