Untrained 2 go

Means to be the opposite of "Trained 2 go"

You get to play/mess all day with people who are Untrained 2 go, they aren't "bout it" or about their business & they haven't the slightest bit of preparation.

Untrained to go

Simply means unttg. Describing a person not brought up ready to fight

Untrained to go is a bad thing to be, it's comparable to a scenario such as being soft while trying to get it poppin'.

2.) Meaning to be unttg.
3.) Meaning to be unTTG.