Hi yolande.....congratulations on your first half marathon!!!
Runners World training plans are really good (www.runnersworld.com & click on training & then on 1/2 marathon). There is an english version too but I like the American one better. The discussions are also really good with lots of tips & encouragement available!
I also have the Nike+ shoes linked to my ipod & the spoken feedback is really encouraging. You can also download spoken training plans on itunes & then onto your ipod.
Hope this is of some use....Good luck with your next one!!