Just some documents I have found handy in the past. These are all based on existing templates, obviously I have/will update them to suit my needs.
The contract is based on Anna Debenham's website contract.
The NDA is based on Andy Clarke's 'Three Wise Monkeys' NDA.
Seriously, I'm not a lawyer. These are generic templates designed to be a good foundation, and are in no way to be considered legal advice.