It can be pretty tough for a person who isn’t affiliated with a university to get access to full scientific papers. However, I recently found two insect journals that have free online content. One is Florida Entomologist and the other is the Journal of Insect Science. I found both through BioOne. If you click on Browse, you can see a full list of the journals hosted there. Only the two insect journals and The Arabidopsis Book are offered freely. There’s still a pretty good collection of naturalist journals here, though, and just reading the abstracts could be valuable.