i need a little knowledge guys..

yo dudes what can i do about yellow tipped new leaves...what is the issue...nitro def? and what can i do..this is my first grow so u pretty much all know thus cheap grow. what do YOU think is up?

Check the plant problems section in the faq. Yellow tips are usually nute or heat burn though.

Yep, yellow tips are usually too many nute's to early.
If your using a potting mix with nutes in it already this can happen.