[Help] I have some questions that i need to clarify

ok so lets begin .
It is my 1st grow, plant started from seed dont know what strain. i think it is indica dominant based on leaves.
started veg on april 1st.
mmm they are all showing pre flowers but the days are getting longer, is that a problem? cuz now i am only using bio grow fert. and i havent started to use bio bloom and top max yet.
i dont know if they will start flowering even if the days are getting longer now it is about 13.6 houers of light outside. what should i do? + i need to top them or somthing cause they are getting high but i dont know if i can top them at this stage (pre-flowering) i added a few photos of 1 of my plants (the biggest) tell me what do you think and if i can top it can you please tell me where based on the photo?.

sry 4 my english .
thanks in advance .

The days are getting longer? She won't flower for a while yet, depending on where you live in this world.
I'd repot if it's been a while.
Looking very nice, you're doing a bloody good job...especially for the first grow.

thank you so what will happen to the white hairs? she will just go back to veg?

A little pre flower is normal. Mine do that in a controled environment. You can top them now. They look great!

thank you so much man can you point me to a guid on how to top properly? cuz i want to do it asap so she wont get any higher.

If they're just hairs from showing sex, then she hasn't started flowering (and look as though they'll be motherf*&^%$rs!!) so no problem.
If flowering had started then she'll go back to veg.
You could do with some local outdoor grower knowledge really...

I would advice anyone growing out doors to start in autumn,or you will have to wait all summer for her to flower un less you bring he in for 12 hours then out for 12.if the days are getting longer then this will grow massive.take it in for 12 hour leave it out for 12,put on flower nutes

Ok thank you ill remember it 4 next time. so now i need to think where am i going to put it without any light to disturb her. thank again for all your help i am much more relaxed now