Excellent advice already given, beekissed (by the way, it's fun to see you in ALL these forums!). Maybe I can just "second" some of the opinions.
First, if the ground is "virgin organic"--forgive the term--then it might take a while to build up its health. My healthiest garden is the one longest organic. It takes extra vigilance for the others.
Floating row covers are great if used right after planting. They really seem to work. Be sure to remove if necessary for pollination.
Constantly watching the plants is crucial. I'm amazed at how fast potato beetles and squash bugs can move in! I hand pick and squish (although I have to use feet for those enormous hornworm caterpillars!) and pay my kids and their friends to trap bugs
Anything that has been buggy should have the foliage removed and burned at the end of the season. Lots of bugs leave behind eggs for next year and this way you are helping not build up their numbers.
Also, rotating crops if you have the space really helps. I had a horrible potato beetle infestation last year, moved my potatoes as far away as possible this year and had only a couple.
Trap if necessary or spray with organic sprays. I sometimes just try to come to terms with imperfection (slugs in my cabbages!!) and some crop loss. Good luck!