Here's a variety of links, some orchid related and some not, which we hope you find useful.
Easy Orchids is one of the better online retailers we have used; their website is clear and easy to understand. They have a nice range of orchids all of which are suitable for beginners. They also sell sundries such as compost.
David Stead Orchids is run by the current Chairman of the British Orchid Growers Association (B.O.G.A.), David Stead. He is a regular winner of prizes at shows in Scotland and across England.
Burnham Nurseries are one of the oldest and most respective nurseries in the UK. The owners have written several well-respected books and are considered to be an authority on all things Orchidae. Since 1958 they have been medallists at Chelsea, with no fewer than 19 golds.
For a PDF viewer we recommend FoxIT PDF Reader, which can be downloaded here. FoxIT PDF Reader is a free program, and is only a fraction of the size of the Adobe PDF Reader.
