just a question

hello everyone,
i was wondering if everyone can help me. My father for about 3 years kept the same plant. He kept re-budding it and it seemed to be doing so well. I was wondering is there a trick to harvesting a plant more than once? can everyone write me back and tell me your info for re-harvesting. Thanx everyone!

write me back with some tips....

once a plant is finished 12/12. finished it cycle. once youve cut off the buds/harvested. the then put the plant under the lites for 18/6 24/0. and it will start to re vegg. ive done i twice to one plant and the plant seemed to get better and better.
i herd some say that a plants get better the second third time round.