Well I thought I would start with a list of some of my favourite sites and online vendors. In this new digital world, there is a lot of information to be found on the internet. Since returning to the hobby, I have found vast amounts of helpful tips, reviews, and information that a modeller could want or need. This is only a partial list, and I will add more in the future.
http://www.armorama.com/ - an excellent site for the armor modeller. Full of reviews, tips, and modelling news.
http://aeroscale.kitmaker.net/ - a sister site to above, but for the aircraft modeller.
http://www.spruebrothers.com/ - an online vendor, with excellent prices and fast friendly service.
http://www.ultracast.ca/ - an online manufacture/vendor. Maker of some excellent aftermarket resin parts and figures, as well as a vendor for some other brands. Fast and friendly service, and I have had the priviledge to use some of their parts, and I must say I am impressed with the quality.
http://www.cybermodeler.com/index.shtml - again another good site, with modelling news and reviews. Lot of information.
And of course http://www.google.ca/ - it is amazing what you can find with a few keywords.
I will add more in the future, but I hope this you find this information helpful.