Hi Shiburai
First of all you might want to do some keyword searches to see what people are searching for. There are many keyword tools out there. I use the AdWords Keywords Tool when I want to look this up.
https://adwords.google.com/select/KeywordToolExternal
Put in some search terms that you would like to be found for. You will get an idea of how competitive and popular these terms are.
Once you've determined a topic, you need a web host and domain name. Lots of people here use GoDaddy.com but there are many others. You'll also probably want a Web editor to build your pages unless you want to code HTML from scratch. Komposer and Nvu are both free to use. I use Dreamweaver. It's not free but one of the better editors out there.
The best advice I can give is to just get out here and start feeling your way around and learning the ropes.
www.w3schools.com is a great site to go if you want to learn the basics of CSS and HTML. You don't have to become a pro to succeed but you should learn the fundamentals.