Improving one's pedagogical skills?

I'm eager to improve my pedagogical skills. A course in university or on-line is the best way, plus classroom practice of course. For last one, I'm not worried, as I get a good share in my teaching sessions. Yet, I feel that I need to built a solid consciousness of the learning, teaching and pedagogical methods.

what would it be a good alternative way for someone who doesn't have time to go to university or take an online course ? Do you know of any good Internet resources? or any suggestion or experiences you want to share?

Thanks in advance