Your local library should be one of your best friends.This is especially true if you spend any time reading or doing research about personal finance and investing. Problem is, most people don't take advantage of all the resources that libraries offer. If you haven't visited a library lately, you may still think they are just a place where you can borrow books. In reality, they have moved well beyond that in recent years and have embraced the digital revolution -- to the point where it has caused friction with publishers. That means libraries can offer a huge amount of information to help you with personal finances and investing. Here are a few ways the library can do this: Access resources from home: The first assumption that you may have is that you have to physically go to the library to take advantage of its resources. This is no longer the case. Many libraries now offer 24/7 access to their databases at your home -- for free. The databases available vary from library to library, but most carry digital back issues of popular magazines (including business, investing, personal finance and trade magazines) along with a wide variety of research, newspapers and encyclopedias that are not available on the Internet. The best part is it doesn't cost you a dime. All you need is a library card and your home computer with Internet service.