This video has good sound quality and repeats the sentences clearly with good pronuciation. It has correct Pinyin as subtitles. Later in the video you get also detailed explanation for each word.
nǐ ( men ) hǎo : hello
zǎo ān: Good morning. wǔ ān: Good afternoon. wǎn an: Good evening. zài jián: Bye.
This video (see at YouTube) is of beginner level difficulty. It has subtitles in Pinyin and Chinese characters. We especially recommend this video.