But seriously, you can make some generic nymphs with nothing more than a little hackle for the tail and a dubbed body. Maybe throw a bead on there. What I would do is pick a fly that you use the most and get the materials to make that one. Then practice tying that one until you nailed it. Then move on to another fly.
A good starter fly is the wooly bugger. All you need for that is marabou, chenelle, and saddle hackle (in whatever color) and that's the basic bugger.
I have an Orvis book that I don't use, but instead I look on youtube a lot. Videos are easier for me to learn on.