I am trying to study the moduli spaces of holomorphic vector bundles quickly, and I'm primarily interested in understanding:

1. Why and where the stability condition is used.
2. How are the moduli spaces constructed.
3. What are the examples, especially in the case of vector bundles on curves.

I was looking for some references but I could not find any reasonable source online.
I have the base for that and I don't want some thing very long and full of details.

I just want to see all the ideas very clearly without to much details.

Please tell me if you know any lecture notes or a book which contains this stuff.

Thanks in advance