Dear Amy,
Before 1811, there only were church books, and GenLias is about civil registry. Searching becomes more difficult, and you'll find less on line, although a lot has happened in the past years in that area.
http://www.geneaknowhow.net is a good general purpose website.
For Groningen,
http://www.allegroningers.nl is a good website. All (99%) of the church books are indexed there and most pages are available as scans on that website.
For Friesland, try
http://www.tresoar.nl. All of the church books have been indexed, but there are no (free) scans of the original documents there.
For Drenthe,
http://www.drenlias.nl is the place to be. All church books have been indexed, but no (free) scans available.
Zuid-Holland is a bit more difficult: many more people lived there, so there is a lot more material to index, so it takes longer to get that on line. For the villages of Zuid-Holland, and index 1695-1811 is available, see
http://www.gahetna.nl/vraagbaak/onderzoeksgids/ik-zoek-ieman..., all in Dutch I´m afraid.
The scans are available on that same site, see
http://www.gahetna.nl/vraagbaak/onderzoek-doen/officieel-doc....
The cities all have their own, separate archives: Dordrecht, Rotterdam, the Hague, Amsterdam, Delft, ... just search for "archive + name of city" to find their websites, many have their own index on line. Some (but not all!) of them have joined an effort to combine these indexes on
http://www.digitalestamboom.nl.
Good luck!
Lars Roobol
http://www.familyaffairs.nl