Advice on marketing electronic products

Been a big fan of this site for a while and have managed to pick up a shit load of tips, what im looking for is some advice on selling a E product on line.

Used methods such as youtube pointing to product page - does not seem to get that many hits to warrant a marketing campaign.

Just started to ask for links from related websites (manually) but don?t get a good response for effort I put in.

As im not a marketing guru what advice would you give to get a product selling.

Again thanks in advance.