So I got my site, <snip/> up and I wanted to ask I use h1 and h2 tags but how does google look at h3 and h4 tags? should i use them?

These tags are probably among the 200 “signals” that Google claims
to analyze, but for the most part, are insignificant imo.


If you have more than one heading, you can consider using H3, H4, etc. They all carry the same weight with search engines if you use your keywords in them. But not that important really.