You will never go wrong in trying to study a language if you remember that exposing yourself to a language, and practicing the language, even if you stumble a few times, is in itself learning.
-How to study a language, Wikipedia
How to Learn a Language
Very helpful tips on learning any language
How to Study a Language on the Internet and in your Head
Short article on studying Latin, but a very good insight on studying language via the internet.
Language Learning Tips-Omniglot.com
The Why, Which, How and What of learning languages.
How to Learn a Foreign Language
A short article on memorization and languages.
10 Good Reasons Why you Should Learn a Foreign Language
Exactly as it says: Why learn another language.