its easy and cheap.... you'll need a filter, i'd suggest sticking with OEM Honda, its either the MM9 or the MCJ, they split them up mid year but either should work just fine and they can look up which one by your year, 9.99 i think

i'd use honda's hp4 10w40 semi-synthetic oil or any comparable 10w40 semi-synthetic, silkolene comp 4 comes in a gallon(4 quart) jug... i'd just buy oil from a dealership instead of online but whatever works easiest for you... i do mine every 2,500-3,000, just whenever between there i have a chance