How points actually work.
Points are added, not deducted, and novice drivers reach consequences sooner.
Points are added to zero.
Your record starts at zero and convictions add points to it. Some other places run the opposite system, deducting from a starting balance, which is why this question catches people who learned to drive elsewhere. Nothing is taken away from you; a number goes up.
The clock runs from the offence.
Points stay on the record for two years from the date of the offence, not from the date of the conviction. Those can be months apart. It is also worth separating two things that feel like one: being issued a ticket is not the same as being convicted, and it is the conviction that adds the points.
Novice drivers reach the thresholds sooner.
For a G1 or G2 driver, two to five accumulated points bring a warning letter, and a first suspension under the accumulated-points system comes at nine or more points. For a fully licensed driver, that first suspension comes at fifteen. Suspension length runs from the day the licence is surrendered, and later suspensions can be longer than the first.
Points are not the whole picture.
Separate novice-driver sanctions, fines, licence conditions and insurance consequences can follow from the same conviction independently of the points. Treat the point total as one signal rather than the complete record, and read the official page for the offences, amounts and exceptions that apply to your situation.