Does anyone have anything .....  maybe a sample of essay or notes about privatization and how could it happen and the effect of privatisation on the social and economic structure

I don't have notes on it but I know a lot about economics! What exactly is the essay title? Privatisation is a very interesting subject in terms of social effects. Economic effects are fairly straightforward, just positive vs negative analysis.
Positive
1. Efficiency - Firms ran by the private sector are classically more efficient than public sector firms, plenty of evidence on google to support this claim (research principal-agent problem as this theory can be adapted for this situation. Public sector managers have different agendas). talk about growth/productivity etc
2. Reduces pressure on public sector budget (this can be doubled up as a social effect as it allows for greater redistribution of resources).
3. Generates large amounts of revenue for the govt as they sell off shares etc (see pretty much all utilities in the UK, british gas etc). Counter point would be that shares are often undervalued.

Negative
1. Unemployment, (social effect), lack of job security etc as profit making becomes sole objective of firm
2. Talk about the case of natural monopolies
3. Plenty of cases where privatisation doesn't actually lead to increased efficiency (e.g. rail services)

Just reply if you want any further points but you should look into these points and it should lead you onto more info. Also, its important to talk about the degree of privatisation (distinguish between partial and full).