Talk Photography is a good resource, like most websites you get some silly sods, but some good advice available.
Don’t waste money on filters and invest in a decent tripod and head plus a remote shutter release. So many different bags, personally prefer rucksack types, not keen on taking weight on one shoulder.
Don’t forget spare memory card and battery, might also want to get a nicer strap, Optech are good for the money
Photoplus for Canon is a useful magazine although like most it gets repeated after 12-18 months
Photoshop Elements is a decent editing software package, not too expensive either
Decent book is worth buying, lots of people recommend Understanding Exposure by Bryan Peterson. I thought it was poor and missed out some important aspects of modern digital photography for instance the histogram and highlight alert.
This one is excellent Book although entitled Landscape it explains exposure really well and understanding that is fundamental in getting a good photo.
Most of all just enjoy it and don’t go pixel peeping at 100% magnification otherwise you might go bonkers.
One last thing it can get a rather expensive hobby, good lenses last for years, have agreat effect on image quality so better spending money on them rather than the camera body.