I do not know how to do edge tuning but looked up how to properly use my one ball jay tool (still not sure is the file supposed to contantly slip out?) and found a few useful sites.
Get More From Your Snowboard's Edges - How To Bevel & Sharpen
Snowboard Repair & Maintenance | Waxing & Deburring Snowboards
Depending on if you make your base edge or side edge your sharper edge will determine which style of riding is better suited.
I am sure there will be others once they are up who will be able to be of more help