I am at the moment considering investing into ETFs, but I am looking first to understand how these products really work.
Indeed, it is my understanding that ETF can vary in terms of structure, thus affecting their counterparty risk.
For example, some of them are doing a SWAP with a third counterpart to whom they have to give the returns of some assets basket in return to the returns of the index (here the index being the "underlying" of the SWAP).
What I'm looking for, is some resource describing, if possible, all the different types of ETFs, and it would be even better if it had some risk analysis approach for each of those types.