http://cricfree.tv/ for Sport streams
Rugby Union Position guide
Six Nations Game
Tickets have to be bought through the clubs. In Ireland need to become a member of club ~50€ to be eligible to buy tickets.
links to the different counties:
Scotland - can buy directly from website. (25, 50, 75GBP) flights to scotland for weekend of 24th feb - 250euro from easyjet. (not it is 12 Jan)