Jean asked this question a couple of posts back....
Let me start out by saying that I learned to sew when I was 11 and I never stopped...through high school, college, during my first jobs, back to school, through marriage and pregnancies...I never stopped sewing...so alot of my knowledge is first-hand and through experience. The second place that I gained most of my knowledge was through books. I have a pretty extensive collection that I've been amassing for decades...starting with the Singer Sewing Library.
The internet started to affect my sewing about a dozen years ago when I first stumbled onto the sewing board, Sewing World that eventually evolved into Stitchers Guild...and there were several email sewing lists that I was on from Quiltropolis...which eventually led me to join The Sewing Circle which was managed by Julie Ann.
I made some great friendships on this internet sewing list...discovered JoMars through them...and fabric shopping with friends. Met Colleen Jones (who first taught me about Full Bust Adjustments - FBA)...things that took my sewing to another level.
That's a quick review of my background...what would I recommend today? Patternreview and Stitcher's Guild are sewing boards that have an awesome amount of information and people willing to answer questions any time of the day or night. Podcasts and blogs of some amazing sewists like: Ann, Marji, MaryBeth, Summerset, The Sewing Divas, Phyllis ~ these women have sewing chops and the ability to teach you how to do whatever.
And books and videos...I can't stress enough how far a great sewing library can take you and teach you. My top 10 sewing books are located to the right here and I know that EricaB has written a post on the books she loves.
But most importantly...be willing to learn! Be inquisitive...don't settle...strive to go higher, do better, accept the challenges and the failures and learn from them. Finally...the old saw, "Practice makes perfect!" is so true. If you truly love this craft, you would want to indulge and wallow in it...to learn it to the best of your ability!
Hopefully, all that the internet offers, as well as, the various bloggers encourage you everyday to spend some time with the craft that we all love to do - SEW!!!!