As for score services, this is a good one where you get lineups, stats and everything live in english.
About the team you'd like to follow closer, it really depends on what you like.
HJK are the biggest club in the country, and are favourites to win the league.
IFK Mariehamn are underdogs, they are currently competing with HJK for the top spot to the surprise of pretty much everyone.
Also have to pull homewards a bit and mention HIFK who have the best supporters in the league if you're into that kind of stuff.