We have for many years been hosting and developing this
which contains a lot of free material. The Tutorials in particular
we wish to develop further. Ideally we wish to keep this site
advert free with a large proportion of the tutorials available
for free to all.
This could be considerably speeded up if we had more funds for
this development and so we are asking for assistance from anyone
who can donate to this worthy cause.
Donors will be given access to newer tutorials as they are developed.
N.B. at present the chapter "Proportionately" of the book
Natural Calculator" is available to those who have made a donation.
If you would like to discuss any of this with us please email