I'm fairly good at them, normal and stand ups.
To be really good it will take ages there is no shortcut, start little and go for distance not height, height will follow.
I can recommend Paul Gowers wheelie school and tbh that's prob the best place to start.
Most people I know who are good at them including myself just started doing them and progressed. It is prob wise to learnt the basices from a pro tho especially as it's easier to arrnage that these days
