Not sure what direction you want, but maybe this will help;
We're learning = we are learning
We're learning
{We're learning} How much?
{We're learning} {so much} = a lot
{We're learning so much} {about} WHAT?
{We're learning so much} {about} {the culture and politics}
{We're learning so much} {...} WHEN ?
{We're learning so much} {...} {in this post-apartheid time}
{post-apartheid} = as described by others (the time after the abolition of "separate development") policy.
{We're learning {so much}} {about the culture and politics} {in this post-apartheid time}
You'll see I ignored the "here". I don't know where it belongs.
Could be
{We're learning so much} WHERE?
{We're learning so much} here
or
{We're learning so much} {about} {the culture and politics here}
I think you need some context to resolve the ambiguity.
Hope this helps.