Another helpful tool is Google - simply type in some text which you see on the coin, and it should tell you where it's from. Even if the script isn't using the Latin alphabet, if you "get close", Google should still be of help - you wouldn't be the first person to read the denomination on a Greek coin as "APAXMAI", for example, even if the actual Greek lettering is "drachmai".
Doesn't help with East Asian coins, of course, though with those, you've really only got a few options to search (China, Japan, Korea, Taiwan). Arabic-speaking countries usually have the name in either English or French as well as Arabic, again with just a few exceptions I can think of (Egypt, Saudi Arabia, Iraq, Iran)
If you go for the physical book Krause catalogue (either buying a copy or borrowing from a local library), you should find a handy "instant identifier" reference table in the front pages which shows pictures of many symbols that appear on non-English-language coins, so you can easily match the pictures with the symbols you see on your coins.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis