Generl questions help needed plz

Five fairly simple questions.
1. When should I start giving the plant nutrients. 1 week?, 2?
2. How to tell if I have given plant to much nutrients?
3. How to tell if I need to give the plant more nurients?
4. How to tell if I have given the plant too much water?
5.How to tell if I need to give the plant more water?

Thanks for reading appreciate any help.

to be honest i havn't given my plants any nutes. and they look fine. top two inches of dirt should be dry when you water.

if it a clone that has just rooted then i would wait 2 weeks to feed nuts. and if it a plant that has good root structure then feedin the nuts is O K

I am using hydroponics but i think your right. I am a week in and their root structures are coming along, I think I will wait a little longer to give them nurients.

don't give them full dose i would go 1/4