llynnnn, you start with the census that gives you occupations and clue. And if you have family stories/photographs they help a lot. Then contacting other people who might also have a common ancestor to build up a picture and find out if they have any stories.
It can be worth researching the general history of an area, event or occupation to build up a picture of someone's life. If they are in the military research their regiment / division.
Parish records sometimes hold more information than simply baptisms, marriages and death. Local history archives can hold information - for example I've just found a relative had a contract to maintain 5 miles of a toll road and another has an application to be admitted to a hospital as a pauper patient which I strongly suspect to be a lunatic asylum (I've already found one in an asylum on the other side of the family). I've not had chance to check these records out as they are in a local record office the other end of the country, but I know they exist as that particular local council has a searchable index of the records they hold which has given me than information.
Then there is wills which sometimes reveal interesting things like a child left out of a will or strange requests.
Then theres the newspaper archives which sometimes reveal interesting things. Of course, if your family was never involved in trouble they are less likely to be in the paper.
And finally google is your friend. Since books over a 100 years are now out of copy right you can sometimes find interesting things from digitalised books or there can be stories and histories about an area that mention names.
Basically any source of information is a potential source of information about your family; the trouble with ancestry is it does tend to limit you to just who is related to who and you have to use other sources to find out other things which you don't necessarily realise at first. Also, the amount of information available freely is still expanding at a huge rate; there is so much more stuff available now than there was just 9 months ago when I started looking. Local councils are realising this is a huge source of potential income so are investing in it to bring in revenue.