It is surprising how much stuff you can find on the internet. I'm not researching Kent at the mo, although I do have families from Kent in my tree. But I've found it very useful to google names of people and towns/villages, and all sorts of wonderful things come up. There are some great websites out there which people have lovingly constructed which contain family trees, parish records, histories of villages and towns.... all incredibly useful. Also it's worth having a look at Family Search although their submitted records need to be taken with more than a pinch of salt; but there is a lot of good stuff on there.
And of course, you can always ask on here, because there are lots of very clever researchers on RC who are only too happy to help.