Hi ootini! (star wars refference?)
I find when boning out a joint of meat, that cutting tends to be the enemy. Always minimise cutting, to cut-
you have to cut through the meat. Instead, try and 'scrape' the meat off the bone- remove enough meat around the knuckle, then roll
the meat back, and holding the knife at a fairly severe 80 degree-esque angle, slide the knife down the bone, working round it and teasing off the meat.
Practice with chicken legs, as they are cheap and easy to come by, but make sure to remove the tendons as they dont make for good eating!
(I recommend strong tweezers, the sort used for de-boning fish). As for knives- have a good chefs knife- 8" to 10", and spend good money on it but take good care!
if you cant re-sharpen it its no good! for butchery at home, i recommend a cheap, easy to steel boning knife knife
(
http://www.russums-shop.co.uk/knives-c44/victorinox-knives-c89/victorinox-victorinox-fibrox-boning-knife-narrow-12cm-p922).