The new world is just our modern Earth so the limitations would be anything a human being could do. But you carry whatever extreme training you had in your past life with you to this new one so if you were some legendary Sword Saint, or some godly scholar that definitely comes along with you. 

If you’re curious about magic coming along with you or stuff that wouldn’t be feasible in the real world? That’s stuff I’ll answer when we have more interest so I can knock out more questions all at once.