The Therapist Development Center has the best study material available. The material is clear, concise, very user friendly as opposed to other study programs. I followed all of Amanda's recommendations for studying and preparing for exam day. I passed the first time I took the written LCS exam using this material. I have recommended the material to others. I cannot say enough good things. I am ready to study for the second exam and feel confident that with the Therapist Development Center's material I will be well prepared.