It shouldn't be so hard creating site with $400 monthly profit. If you really worked on it 40 hours(literally speaking) a week. In fact it should be quite easy.
Do perfact posting for othter and write well and fited thing to offerd job of writing.. Nothing more....
Search for low competition keyphrases on Google's keyword tool, post your articles on ezinearticles with a link pointing to your site. Go to clickbank.com and find a relevant product that solves the problem of the person that is reading the ezine-article. Put this product on your site and tell people how this product helped you (social proof). Analyze, test and track your links, visitors and pages and improve your campaigns. If you find a product that sells well, build an authority site. Very basic, but it works, at least for me...
Start a blog and write about things you're passionate about. You can add ads after getting moderate traffic. Find forum posting jobs in the BST > Content Creation section. They are the easiest to do jobs. Just create interesting, unique threads/posts and post them in various forums.
create a website never made before that is all, it depends on the idea . and never never ask how to make XXXX per YYYY
Dont get overloaded with the information provided in 'Replies'.. Just 'TRY' each and every possible way suggested by all, you will know where you can make the best. Stick to that..
There are so many ways.You can offer services in DP.You can make website and promote and get money through traffic. You can go to BST section this might help you