The first thing you need to know in order to avoid getting scammed is that nothing worth while is easy. In order for you to make money online you will have to work at it.
-You also shouldn't open your wallet to the first cool thing that comes by.
-You should learn a few techniques and then take the time to work them well.
-Yes, article marketing is a great way to build up traffic and backlinks.
-Many people who come to your site to leave comments are spamming you. In your persuit for good things, just remember that when you go to other people's sites to leave comments. Aim for ones that help and not ones that are just annoying.
It's easy to feel overwhelmed in this business. Just take it one day at a time and you will get there.