Hmm, maybe your asking on where will you put the H1 tag?... It commonly used in Blog headers where you put your vital keywords so it would be easily access and indexed by spiders...
If you're asking where it goes, it usually goes at the top and is displayed as a very large font, but search engines will weigh the keywords you use in your title stronger than average sized, normal format text.
Open your blog and login and go to edit the layouts and put the <h1> tags near the start <body> tag. If you will confess than let me know I'll help as possible as I can for you.
Naturally, text in H1 tag is very big. You can apply CSS to make it normal size. Nobody will even know, that you are using this tag, but it will serve for you in SEO.