If you need a user guide or specific teaching material created from scratch, just ask, as I may well be able to create something for you. I have over twenty years’ experience at creating user guides and instructions for education and for ICT-based products, for both adults and children, and am in the process of creating and editing content for this site.
I also create Maths, English and cross-curricular materials, written or multi-media.
I have written and edited teaching units for PG Online.
Check out my blog and the resources on this site for an indication of the range and style of user-friendly technical writing I do.