Grammar
Finnish grammar is difficult to someone who is not familiar with the language, but it is not impossible. There are very few exceptions to the existing rules. Did you know for example that Finnish only has three truly irregular verbs, and that the rest nicely fit into the rules?
The grammar has been divided into three parts:
"Basic stuff and more" explains about the things which you absolutely have to know before you start with the more complicated grammar. The bottom of the list contains some fairly advanced stuff already, because I didn't have any space anywhere to put it.
"The Finnish tenses" lists all of the tenses, plus some special Finnish verb constructions.
"The Finnish cases" tells you all about the different cases in Finnish.