whats the easiest and cheapest way to travel from paris, france to italy and back in a few days?

im in paris current as of the 28th and i wanted to travel visit italy and maybe spain via the train. i was trying to figure out exactly what i should be looking for and/or what is the easiest and cheapest way to go?

What paperwork and what is the process to relocate to Europe?

We are looking to relocate to Europe and we have several countries we like such as France (Paris) but we hear job market is difficult there. Others we have in mind are England, Italy or the like. What are some of the best cities to move to and work in Europe and what is the process and paperwork necessary to do so.
P.S. We are a couple of young professionals in the technology and interior design fields.
Thank you in advance

6 hours in Paris' Charles De Gaulle Airport before connecting flight to Italy,possible for short city tour?

i have an upcoming layover for 6 hours in Charles De Gaulle Airport before my next departure to Italy. ill be arriving at CDG around 6.45 am and depart for italy at 1315. is it possible for me to get out of the airport for a quick tour of paris? im from malaysia and i dont speak any french. would it be possible to go and come back in time for my next flight? thanx!