How do i change the oil...how much and what kind of oil do i use?

Manufacturer recommends "Suzuki Performance 4 Motor Oil". Actually, any SF or SG rated oil under the API service classification will suffice. 10W-40 is the recommended viscosity.

If you can not get 10W-40, the following are acceptable:

14 to 104 degrees F 20W-50
0 to 104 degrees F 15W-40 or 15W-50
-4 to 104 degrees F 10W-40 or 10W-50
-4 to 86 degrees F 10W-30

The Engine oil capacity on the VL 800 is:

3.2 U.S. Quarts (3000 ml) without a filter change

3.6 U.S. Quarts (3400 ml) with a filter change.

You are going to need a motorcycle lifting jack stand or similar device to properly accomplish the oil change. Before you start, locate the oil filter on the front side of the engine, between the engine block and the radiator. Read and copy down the number on the filter. The OEM filter is a Suzuki 16510-03G00-X07, I think.

Start raising the bike on the stand until level, then strap it securely to the stand. Put an oil catch pan/can, etc under the drain plug, which is on the bottom of the engine. Remove the drain plug and catch all the oil. Remove the oil filter. Before installing the new filter, lubricate the rubber gasket with a little of the old oil. Install the new filter, re-install the drain plug tightly and then fill with the above specified type and amount of oil.

There are a number of different places that will accept waste oil for recycling.

God bless and good luck!