To start with, if you're a european and you've been interested in playing Heroes of the Storm, I've got a recruitment code for you: https://battle.net/recruit/QM8PFZ5W98

Use that, and play on a european server, and you'll start playing HotS with your ol' pal Jim Raynor as your first Hero, and an experience bonus to get more levels, more gold and therefor more characters faster. Get to account level 10, and you'll also get Sylvanas. It's a good time to get in now, because Blizzard's just about to run an "all Heroes available to play for free" weekend, with another promotion of a week's bonus experience on top of what you'll get from the recruitment bonus.

And if 4 of you get to level 10, my characters get to ride a bike.

But aside from that I think it's a pretty good game. If you've wanted to get into MOBAs like LoL or DotA before but found them to have too much of a learning curve, HotS might be what you're looking for.