Abaris Composite Training, is a great resource for training in design and repair of composites. Abaris has courses in all types of composites including courses on industrial plastics, fiberglass (FRP/GRP) etc. An upcoming course in Composite Structural Design, Sept 17-21 in Reno would be well worth your time. Some background in composites is required to take this course but if you brush up on your mechanics of materials you could be alright. This course is for serious composites engineers but can also be great for new engineers with some background in mechanics of materials.