Read my review of Frantastique, a story-based learning program with exercises, dialogues, stories, historical notes, videos, and comics. Each lesson takes about 15 minutes, making it easy to squeeze daily practice into a busy schedule.
The imperfect subjunctive is a literary verb form, meaning that it's reserved for formal, written French - mainly literature, but also history and journalism.
Sometimes you're going to feel stupid while learning French, and that's ok. Being self-conscious about making mistakes is counter-productive - so don't be.