1. Locate the very top of your plant and cut through the main stem just below the newest growth. This should be done after the 3rd or 4th leaf set but can be done at any time after the 3rd leaf set.
2. Shows Plant Top cut off and where the 2 new Branches that will form a "Y" in the main stem will grow from.
3. Shows the newly topped plant after 2 days of growth, notice the Y in the Stem Forming.
Dont top yours yet, its still to young, but basically cut the top off, its not hard to mess up
you really should wait till you start to get the side chutes starting to grow, as soon as you see sum new growth (numbers 3 in the pic) then you can top