There are four tones and a neutral tone (quin1sheng1) in Modern Standard Chinese. Please download this PDF file to see the graphic of the 4 tones. A neutral tone syllable is pronounced briefly and softly, and there is no tone marks for it. On the page 2 of previous handout, we have the students practice the tone marks as well.
If you already know the pinyin of the word you want to know, you can go to YB Chinese English Dictionary to look up its corresponding Chinese characters. Select “Pinyin >> Chinese” first, then type pinyin on it. It will show you the Chinese character and English meaning. For example, type quan2 in the translation bar, you will see the meaning.
For more details about using English-Chinese dictionaries, please see my previous article on this blog.
For parents to watch: