Six months before you ring on your own, and that is normal
The first session
Handling the bell with somebody's hands over yours. About forty minutes and you will use muscles you did not know about.
The timescale
Six months to ring safely alone and two years to ring changes. That is normal and everybody in the tower took that long.
Who can do it
Anybody from about eleven upward with reasonable balance. Strength is barely involved; it is almost entirely timing.
