I’ve talked before about the list of glossaries that a friend of mine put together (and which I’m sure she’ll add to in the future). While going through these glossaries, I came across a couple of little grammar problems in Spanish that can be troublesome.

The first topic is the use of the personal pronoun “se“. www.elcastellano.org has a good list of the uses of this pronoun, along with some very clear examples of use. This list can be especially useful for non-native Spanish speakers who may have difficulties understanding these constructions. “Se puede” learn on this page.
Another topic that is generally easy for native speakers but trips up speakers of Spanish as a foreign language is the use of “que“. That same site ,elcastellano.org, has another area that talks about the different uses of the pronoun que (interrogative, exclamatory, relative) and the conjunction, letting you know which ones have an accent mark and which don’t. It also has a little bonus on “dequeísmo“, which is the ever-growing error (by both native speakers and others) of using “de” incorrectly. In order to avoid misusing the preposition, we often convince ourselves that de que is incorrect when it actually should go there.

To wrap up this summary of “mini-topics,” I also found this area that discusses common errors and questions on accent marks. Who hasn’t been unsure of whether or not to put an accent mark on “ti”, “éste”, “aún”…? Well, éste is a great site to find explanations and examples all together.