I've found a blog which is really interesting for Spanish speakers. The explanations are in Spanish but it deals with typical problems with learning English such as grammar, pronunciation, etc. Go to this link as an example and you'll tell me your opinion.
The blog is http://www.hablamejoringles.com/ . The only problem is that everything is in Spanish so you don't practise English too much but it's quite useful to solve doubts and the examples are very clear. It's worth a visit from time to time.
See you in class.