Like you, I was rusty and feeling apprehensive about doing structured, high school level literature appreciation. The Stobaugh guides were not as helpful as I had hoped either. The first two give very helpful insight into analysis.
Some sites even have objective tests and quizzes over the work and they all have writing ideas.
I consider the lit analysis sites tour guides, one can certainly depart from the main group but these sites give you some direction. Once we'd worked through a few selections with these sites, my students have gotten much better at picking out elements and relating them to themes and effects. We have all increased in our appreciation of the writers' craft and I think the benefits far outweigh the disadvantages. Many of the test prep books like Sat II prep or Barron's AP Literature have succinct explanations and examples of the terminology. These books have the added advantage of test practice with both essays and multiple choice.