Yes. Die here means the.
Afrikaans uses die as the definite article for all nouns, whether singular or plural:
Unlike languages such as German or Dutch, Afrikaans does not have different forms of the for different genders or cases. It is simply die.
Yes, basiliekruid is normally written as one word in Afrikaans.
Afrikaans often forms compound nouns as single words. That is very common:
So if you are used to English spelling compounds separately, Afrikaans may look more compact.
This sentence uses the standard Afrikaans main-clause order:
Subject + Verb + Object + Other information
So:
That makes it a very straightforward sentence.
Afrikaans main clauses usually place the finite verb in the second position, and here that gives:
Yes, you could, but it is slightly different in emphasis.
Both are natural, but:
So the original sentence is a bit more specific and agricultural/gardening-oriented.
A rough English-friendly guide is:
ba-SI-li-krœyt
or more loosely
bah-SEE-lee-kroyd
A few notes:
You do not need perfect pronunciation immediately; being understood is more important.
In theory, die can be both singular and plural, but basiliekruid itself is usually understood here as a singular mass-like noun: the basil.
So:
If you were talking about multiple basil plants, context would usually make that clear, or you might use a different phrasing such as:
So in this sentence, most learners should understand die basiliekruid as the basil (plant/herb).