Though I have not played more than a few demo type sessions, You might want to look into Savage Worlds. It's fairly simple system and more importantly, it is genre neutral, so once you learn the base rules, you can play ANY genre. There are pre-built sourcebook for various genres, but you can feel free to take or leave them if you want... Each "world" has a few alternate rules, but they don't add significant complexity to the game system(though they may change an existing rule fairly much!) Most importantly, there are test drive rules for free available from the Publisher so you can test all you want without any monetary investment. If/when you want to buy stuff, they do either printed or PDF, so you can choose your choice of medium(not sure how this works with printed medium in non US locations though!)