Where can i find information on patch programming?
If you are new to synthesizers at all, search the internet for general documents about digital synths first. If you are already somewhat familiar with synthesizer programming and/or you have programmed a roland synth like the JV, XP, XV or fantom or JUNO-G before, you will find the sound programming very easy and familiar. To get more tips you should read the fantom tweak book in the document section of roland clan. Although written for the FANTOMs this document can give you a very deep understanding of your MC-808 sound architecture and many, many, many very good hints on sound programming.