2- can you give steps that I should follow in seo ?
You should work with cool onpage optimization & Technical SEO. It's important for ranking. Then follow some strategy for building link for your money site. Just remember, don't create any single backlink without checking that site. You need to check, before you put your link on that site, will it hurt or safe? I am talking about backlinks, cause backlinks are still king for ranking in SERPs. Besides, you can use this tool for building quality backlinks:
http://linksearching.com/
Feel free to PM me, if you will need more strategy. Hope i can help you.
3- should I put articles every day or put 1 and after it rank I put the others ?
Make a content calender. I mean, How much content do you have? How many days you want to return on your investment. If you have enough content and budget, you can post every day. If you don't have, you need to post step by step. But don't think that, when a content will be ranked then you will post another content. That's the very cheap idea.
4- each article I should do for it backlinks and web2.0 sites or no?
Forget about web 2.0. Its worst method ever. It can be worth, if you can make it better than better. I don't have enough time to write here about how to create a powerful web 2.0 circles. But you can find it in BHW. Try to build quality and relevant backlinks.
5- how much backlink I should do for each article ?
Nobody can't say about that. Check your competitors, what actually they are doing for staying in first position or first page.You can understand how much backlinks you will be needed to create.
6- is it safe to buy some back links and web2.0 on fiverr or no
Its bullshit way to build backlinks. I already provide a great tool. You can do it yourself. Most of the fiverr gig sellers are providing spammy link and software base links. That link can hurt your site.
7- tell all about seo if there's here good coures about seo give it to me
Don't need to do a course. Just follow the step, what I wrote. Hope, you can do better. And again, if you need any help, PM me. I will help you.