My advice is to start out with a one camera setup. This way you
can better understand how each device in the setup
works.
To
monitor anyone approaching your house point the camera toward
the most likely accessible area. Also make sure the camera has an
unobstructive view for at least 20 feet so the image will have already
been taken before the perpetrator gets to your house.
An outside camera should be high enough so the peretrator can not
easily access it. An inside camera is best because there is less wireing
or in the case of a wireless camera the transmit distance can be easily
delt with.
Inside Wireless Camera In Window Outside Wired Camera Close To Roof
If you are using a wireless camera then you will need a
receiver like the one
below

Locate the receiver next to a TV or
VCR with A/V inputs or next to
a
Computer with a Graphics Card with a Video Input or use a USB
Adapter.
For a wireless setup hook camera receiver to your tv, vcr or computer
graphics card via a video audio cable.
For a wired camera hook camera cable a/v plugs to your tv, vcr
or
computer graphics card.
Just a word of advice. I would hook to a tv first so you can see the image
right away and make any adjustments. Now you can set up your
software
and send your image to your web site.