As you may have noticed, you can now register for meetings via meetup.com. To do so you’ll need an account on meetup but if you have one you’ll be eligible for:

Free 10-day trial & 20% off unlimited access Safari Books Online Library

Simply follow the “How to redeem” link on http://www.meetup.com/wpuguk/sponsors/

Additionally, without the need to register anywhere else, you can get

50% off all ebooks and videos at oreilly.com

Simply enter at the discount code DSUG at the checkout of oreilly.com.