A primary resource is often ATM Books. There is
something here for everyone from beginner to advanced.
If you need to source something, this list of
UK ATM
Suppliers should help.
There is a confusing multitude of ways of measuring the sizes of abrasives
used in optical work. My Guide to Abrasive Sizes
resolves this potential confusion.
These ATM programs
will aid the realisation of your projects.
These Other ATM Links
should enble you to find any other information or resources you require.