yeah, I got the farming part...
well you need to be more specific with what champion your trying to gank with? and who your trying to gank, if they have no escape and there mid way into lane, you should be able to easily gank them, forcing them to immediately flash, with flash gone your laner doesn't have to worry about all ins, if they do have a escape i wouldn't bother unless you know its down or he/she is low enough that you can kill them in 1 rotation, because i use wukong jungle when ever i see someone i use my dash then my q to harrase them before they use their escape then walk in and out of lane (usually mid) doing that so my laner can kill them.
also what thepeikpatato said, this is how i learnt to gank, it may not work for you as well as for me