Submit Blog to Search Engines

Ok I am totally new at this. This is my first ever blog and it lists updates on pricing for online shoppers. I have no clue about PHP and am limited on html. I accessed Word Press through Yahoo small business.
I have been listing my blog with search engines and alot of them say it cant be listed because it has no meta tags. Should a blog have meta tags and if so on what page would I put the meta tags.