Learn Turkish: Burada büyük bir problem var. - There is a big problem here.

In Turkish, var is a special word used to express existence, meaning "there is" or "there are". Because verbs and words acting as the main idea of the sentence usually go at the very end, var is placed last.

Why is the word order büyük bir problem instead of bir büyük problem?

When you have both an adjective (like büyük, meaning "big") and the indefinite article bir (meaning "a" or "an"), Turkish uses the order: Adjective + bir + Noun. That is why it must be büyük bir problem.

What is the -da ending on the word Burada?

The suffix -da (or -de) is the locative case, which tells you where something is located (meaning "in", "on", or "at"). The root bura means "this place", so burada literally translates to "at this place" or "here".

If there were multiple problems, would the word var change?

No, var always stays exactly the same, whether you are talking about one thing or many things. To say "There are big problems here", you would only change the noun: Burada büyük problemler var.