I came across an excellent resource for learning Spanish yesterday in the form of a series of podcasts on the Really Learn Spanish site. There are five podcasts in total, each of which lasts for about 10-15 minutes, featuring the site owner, Johan van Rooyen, giving clear and helpful advice about various aspects of the language. I have only listened to two of them so far but they give me high expectations for the others.
Unfortunately, like so much on the Internet, it petered out to an incomplete ending; the last one was published in April last year. Perhaps he will pick it up again in future? Still, while it may not cover everything, it is an excellent resource and I plan to make the most of them.
Edit (2018-03-27): Really Learn Spanish link flagged up as now being malware vector; link removed.