everyone has their way to grow. Some people just let the plant grow and have a good out come. Others will defoliate everything but one fan leaf at the top of each main branch. It will all grow what you are looking to gain.
A couple of things to consider.
#1. Air Flow at the media level helps prevent bugs and diseases by keeping the humidity lower in this region. Hence some growers will remove all of the lower 1/3 of plant grows from the plant.
#2. Consider your grow light and its true from the wall watts. Most of the lower bud sites are not going to get enough light to develop into quality buds. Some people choose to leave them and others remove. Removal can occur as late as 3 weeks into flower, but doing so shortly after buds sites have developed will aid in bud production at the sites receiving the most light. Consider picking a number between 5 and 7. This is the number of nods to count down and remove bud sites that will not fully develop. Common term for this is lollipopping and it is NOT suppose to lower yield.
As mentioned there are many different styles of growing, but choose as you may an enjoy!