How-to video site Howcast has raised $1 million of a $3 million round of funding, according to an SEC filing. CEO Jason Liebman tells us that because of “strong market traction,” the company is “selectively expanding participation for growth capital.” Users can upload their own how-to videos to the Howcast site; they are also distributed to other sites, including YouTube and Hulu. The startup raised $8 million in a first round led by Tudor Investments in February 2008; it added $2 million to the round last October. Backers include AOL (NYSE: TWX) CEO Tim Armstrong and MySpace chief product officer Jason Hirschhorn.