If you don't want to leave home? No. You don't need to learn anything anymore. It does help, though, to learn the basic abilities of the most commonly played he

If you don't want to leave home? No. You don't need to learn anything anymore. It does help, though, to learn the basic abilities of the most commonly played heroes and a few standard item/ability builds. But if you want to travel? Go to Mexico City or Madrid? Automated translation is better than nothing, but it's not at all the same as communicating fluently with someone.