Ok, as I understand, no one here is engaged in affiliate marketing or adsense websites... That's why I decided to post some info that I have learned.
Adsense websites - You just need to choose your niche, write some interesting and attractive content and put it on your website...and than you need to add adsense ads block. But the hardest thing is to get a lot of traffic. You need to learn how to make SEO (search engine optimization) - and this is the hardest thing I guess.
Affiliate marketing - You need to choose your niche (it can be even one product). You get your own link that you can put anywhere. And if someone would buy this product then you earn %. In this case you can promote your produts through Squidoo lense or another free pages like Blogger. But you still need a traffic that's why I think that I need to learn some SEO techniques. 
And before I going to make my first website using Wordpress. Do you have some experience with it? I would be happy to hear any advice in comments. Thanks :)
P.S. It's possible that there are some inaccuracies...I just started :)