Risograph printing

Check out dittopress.co.uk for some contemporary Graphic Design in block colours.

Bitmat vs Vectors vs Pdf's

A guide to the difference between these file formats

CMYK and RGB color

RGB color, red, green, and blue light are added together in various ways to reproduce a broad array of colors. The main purpose of the RGB color model is for the sensing, representation, and display of images in electronic systems, such as televisions and computers, though it has also been used in conventional photography

CMYK refers to the four inks used in some color printing: cyan, magenta, yellow, and key black.

Graphic Designers need to understand what this is and how it effects them when designing.

http://en.wikipedia.org/wiki/CMYK_color_model
http://en.wikipedia.org/wiki/Rgb

A2 Printing

I had a quick look to see the options for printing colour A2 and here is what was found. I have not used any of these printers so use at your own risk!

All Printers the world over require CMYK files NOT RGB so I would recommend you make a PDF from Indesign. If in doubt give them a ring and ask!

These are dead cheap (even cheaper if you send in more than one print - saves postage MIN £1.94 - MAX £3.99)
A2 230gsm Matt Posters £3.25
A2 260gsm Satin Posters £3.20
A2 120gsm Budget Posters £2.70
http://www.amc-photographics.com/index.html

These seem cheap as well
http://www.zip-posters.co.uk/

This Printer seems to print A2 for £10 inc VAT and Delivery
http://www.1clickprint.com/poster_printing/prices.php#2

This one is £12
http://www.printexpress.co.uk/large-format/deluxe-glossy-posters/47/2p-n-032/

Let me know if you get anything printed and how it went!