I bought and read a text book.
Collins Easy Learning Spanish Grammar
I already bought a Oxford Essential Spanish Dictionary for studying Spanish, but it is unsuitable for learning Spanish grammar. Of course, it is a not bad portable dictionary, only I haven't enough skill to use the dictionary appropriately. Thus I needed a good grammar book to complement the dictionary.
When I bought the dictionary, I also bought a Collins Easy Learning Mandarin Chinese Dictionary. In contrast to the simple Spanish dictionary, the Chinese dictionary has many sample sentences and appendices. It is exactly "Easy Learning", better for beginners.
I went to a bookstore, looked for a Spanish grammar book, then I found "Collins Easy Learning Spanish Grammar". Because I already knew a strong point of Collins Easy Learning series, I decided to buy the book without long thinking.
I finished to read the whole of the book for two weeks. I think the book is excellent, recommend to everyone who wants to study Spanish. The book is easier, deeper and more friendly than any grammar explanatory contents I've read.
The book consists of over 200 pages of grammar explanations and a list of basic verbs. An explanation is very(sometimes excessive) kindness. Many sample sentences and tips will aid your study. Difficult things such as verb tense and accent rules are explained carefully. The only dissatisfaction: Why I didn't read this book when I begin to study Spanish?