We've reached the crazy amounts of international friendlies stage before the World Cup and I'm pretty psyched. I made up a spreadsheet of a lot of the games, which you can find here. I basically included teams in the World Cup and a few other interesting ones.
It should be easy enough to find streams for the games not on tv (firstrowsports.eu, yo) although the quality is questionable and you can't always find English. Case in point, currently watching Belgium vs Luxembourg on a pixelly stream in French.
I'll definitely be watching all the USA matches and I'd like to try to catch Germany, Portugal and Ghana as much as possible, just to size up our competition a little better. I'll also be watching England and Belgium as those are my two 'adopted' teams for this WC. Probably others too like Brazil and the one Wales game because Aaron Ramsey (unless he doesn't play, then screw that).