Staying in countries longer than tourist visa allows
Look, I've never travelled, so possibly the answer to this question is really obvious. Say I was to decide to live in country x for a while -- six to twelve months, say -- because I wanted a change of lifestyle/was doing some volunteer work/etc, what are the visa requirements? Specifically, I'm talking Rwanda, Ghana, Ethiopia, Uganda and maybe Tanzania. Is it possible for foreigners in sub-Saharan African countries to just ... rent regular places? To share house? Do such countries grant visa extensions that are that long or would you need to apply for something special (i.e. permanent residency status)?