tomcat的官方下载到底该点哪个啊？

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KEYS | 6.0.16 | Archives

Release Integrity

You must verify the integrity of the downloaded files. We provide PGP signatures for every release file. This signature should be matched against the KEYS file which contains the PGP keys of Tomcat's Release Managers. We also provide an MD5 checksum for every release file. After you download the file, you should calculate a checksum for your download, and make sure it is the same as ours.

Mirrors

You are currently using http://apache.mirror.phpchina.com. If you encounter a problem with this mirror, please select another mirror. If all mirrors are failing, there are backup mirrors (at the end of the mirrors list) that should be available.

Other mirrors: http://apache.mirror.phpchina.com http://www.apache.org/dist (backup)http://www.eu.apache.org/dist (backup)

6.0.16

Please see the README file for packaging information. It explains what every distribution contains.

Binary Distributions
Core:
zip (pgp, md5)
tar.gz (pgp, md5)
Windows Service Installer (pgp, md5)
Deployer:
zip (pgp, md5)
tar.gz (pgp, md5)

Source Code Distributions
tar.gz (pgp, md5)
zip (pgp, md5)

到底该点哪个啊？为什么下载下来后，解压后好像不能安装一样呢，就像下的是什么书籍一样了，打开里边就是很多个文件夹什么的，到底是怎么回事啊，请高手们帮帮忙啊。。
Binary Distributions
Core:
zip (pgp, md5)
tar.gz (pgp, md5)
Windows Service Installer (pgp, md5)
Deployer:
zip (pgp, md5)
tar.gz (pgp, md5)

Source Code Distributions
tar.gz (pgp, md5)
zip (pgp, md5)
是这些么？可是怎么好像不对啊？这么多个啊？