Afrikaans often uses van to express of, just like English:
Using se is more common for possession, especially with people or more personal possessors:
So bewys van woonadres is the normal and natural way to say proof of address.
In Afrikaans, just as in English, some of-phrases are used without an article when they describe a type or category.
So:
If you said bewys van die woonadres, that would sound more like proof of the specific address, which is more specific than the general document category.
Woonadres is a compound noun:
So woonadres literally means something like residential address or address where someone lives.
Afrikaans uses compound words very often, much like Dutch and German.
No. Afrikaans adjectives are much simpler than in many other languages.
In this sentence, beskikbaar stays the same. Afrikaans does not mark adjectives for gender the way some languages do, and it has far less adjective agreement than Dutch or German.
So you can think of it simply as:
Yes, grammatically you could.
The difference is:
Using die sounds more definite and specific. Using 'n sounds more general or indefinite.
A simple pronunciation guide is:
duh buh-VAIS fahn VOHN-ah-dres is buh-SKIK-baar
A few helpful notes:
Exact pronunciation varies a bit by speaker, but this will get you close.