Making a small wood chip biodigestor to produce methane? Answered

I would like to build a small anerobic biodigestor first and then a larger one that I can use woody debri (chipped wood waste) to charge the digestor along with the right bacteria (some are better than others) and heat that will produce tons of methane gas..... 

Any great ideas out there as I have acess to lots of chipped wood.......???

Thanks very much

Peter