Depends what you want to jack up!
For the whole front use a block of wood and a jack under the sump and put the axle stands under the "boxes by the sills" -- which are the jacking points.
For the back, either use the rear beam (if you've a jack that will reach) or the spring mounts, putting the stand/stands under the jacking points. If you've got a jack -- probably a bottle jack -- you can jack the rear by the jacking points and put the stands on the triangular section where the main floor bends up.
For one side at the front, put the jack at the anti-roll bar to suspension mount, like the man says.