About apache tomcat

Question

i want to download the tomcat to setup a webserver so that i can place some JSP pages there
i went to this site
http://jakarta.apache.org/site/binindex.cgi
but i really had no idea which one i should download.......
after reading some of the FAQ there, i only know release builds are more stable....
by the way, what are these?? what keys???tomcat seems so complicated.......
BCEL KEYS
5.1 zip PGP MD5
5.1 tar.gz PGP MD5
Cactus KEYS
1.6.1 zip for J2EE API 1.2 PGP MD5
1.6.1 zip for J2EE API 1.3 PGP MD5
Commons Attributes KEYS
2.1 zip PGP MD5
2.1 tgz PGP MD5
Commons Beanutils KEYS
1.7.0 zip PGP MD5
1.7.0 tar.gz PGP MD5
Commons Betwixt KEYS
0.6 zip PGP MD5
0.6 tar.gz PGP MD5
Commons CLI unsigned
1.0 zip PGP MD5
1.0 tar.gz PGP MD5
Commons Codec KEYS
1.3 zip PGP MD5
1.3 tar.gz PGP MD5
Commons Collections KEYS Release notes
3.1 zip PGP MD5
3.1 tar.gz PGP MD5
Version 2.1.1 Release notes
2.1.1 zip PGP MD5
2.1.1 tar.gz PGP MD5
Commons Configuration KEYS Changes Report
1.0 jar PGP MD5
1.0 tar.gz PGP MD5
1.0 zip PGP MD5
Commons Daemon KEYS
1.0 tar.gz PGP MD5
Commons DbUtils KEYS
1.0 zip PGP MD5
1.0 tar.gz PGP MD5
Commons Digester KEYS
1.6 zip PGP MD5
1.6 tar.gz PGP MD5
Commons DBCP KEYS
1.2.1 zip PGP MD5
1.2.1 tar.gz PGP MD5
Commons Discovery KEYS
0.2 zip PGP MD5
0.2 tar.gz PGP MD5
Commons EL KEYS
1.0 zip PGP MD5
1.0 tar.gz PGP MD5
Commons FileUpload KEYS
1.0 zip PGP MD5
1.0 tar.gz PGP MD5
Commons HttpClient KEYS
3.0 Alpha 2 zip PGP MD5
3.0 Alpha 2 tar.gz PGP MD5
2.0.2 zip PGP MD5
2.0.2 tar.gz PGP MD5
Commons IO KEYS
1.0 zip PGP MD5
1.0 tar.gz PGP MD5
Commons JEXL. KEYS
JEXL 1.0 zip PGP
JEXL 1.0 tar.gz PGP
Commons JXPath KEYS
1.2 zip PGP MD5
1.2 tar.gz PGP MD5
Commons Lang KEYS
2.0 zip PGP MD5
2.0 tar.gz PGP MD5
Commons Launcher KEYS
1.1 zip PGP MD5
1.1 tar.gz PGP MD5
1.1 example zip PGP MD5
1.1 example tar.gz PGP MD5
Commons Logging KEYS
1.0.4 zip PGP MD5
1.0.4 tar.gz PGP MD5
Commons Latka KEYS
1.0 Alpha 1 PGP MD5
Commons Modeler KEYS
1.1 zip PGP MD5
1.1 tar.gz PGP MD5
Commons Net KEYS
1.2.2 zip PGP MD5
1.2.2 tar.gz PGP MD5
Commons Pool KEYS
1.2 zip PGP MD5
1.2 tar.gz PGP MD5
Commons Primitives KEYS
1.0 zip PGP MD5
1.0 tar.gz PGP MD5
Commons Validator KEYS
1.1.3 zip PGP MD5
1.1.3 tar.gz PGP MD5
ECS KEYS
1.4.2 zip PGP MD5
1.4.2 tar.gz PGP MD5
HiveMind KEYS
1.0 zip PGP MD5
1.0 tar.gz PGP MD5
1.0-docs tar.gz PGP MD5
Note: HiveMind uses a combined binary/source distribution, with documentation as a seperate download.
Jetspeed KEYS
1.5 zipped war PGP MD5
JMeter KEYS
2.0.1 zip (PGP MD5)
2.0.1 tgz (PGP MD5)
Log4j KEYS
1.2.8 zip PGP MD5
1.2.8 tar.gz PGP MD5
Lucene KEYS
1.4 zip PGP MD5
1.4 tar.gz PGP MD5
ORO KEYS
2.0.8 zip PGP MD5
2.0.8 tar.gz PGP MD5
POI KEYS
2.5.1 zip PGP MD5
2.5.1 tar.gz PGP MD5
RegExp KEYS
1.3 zip PGP MD5
1.3 tar.gz PGP MD5
Slide KEYS
2.0 client tar.gz PGP MD5
2.0 client zip PGP MD5
2.0 server zip PGP MD5
2.0 server tar.gz PGP MD5
2.0 server Tomcat 5 bundle zip PGP MD5
2.0 server Tomcat 5 bundle tar.gz PGP MD5
2.0 server Tomcat 4 bundle zip PGP MD5
2.0 server Tomcat 4 bundle tar.gz PGP MD5
For Apache Struts, please see the project acquiring page.
Taglibs KEYS
Library Releases
Tapestry 3.0.1 KEYS
3.0.1 zip PGP MD5
3.0.1 tar.gz PGP MD5
Tomcat 3 KEYS
3.3.2 zip PGP MD5
3.3.2 tar.gz PGP MD5
Tomcat 4.1.31 KEYS
4.1.31 zip PGP MD5
4.1.31 tar.gz PGP MD5
4.1.31 exe PGP MD5
Tomcat 5.5.3-beta
KEYS
README (contains packaging information)
5.5.3-beta tar.gz PGP MD5
5.5.3-beta zip PGP MD5
5.5.3-beta exe PGP MD5
5.5.3-beta Deployer zip PGP MD5
5.5.3-beta Deployer tar.gz PGP MD5
5.5.3-beta Embed zip PGP MD5
5.5.3-beta Embed tar.gz PGP MD5
5.5.3-beta Admin zip PGP MD5
5.5.3-beta Admin tar.gz PGP MD5
5.5.3-beta Compat zip PGP MD5
5.5.3-beta Compat tar.gz PGP MD5
Tomcat 5.0.29-beta KEYS
5.0.29-beta tar.gz PGP MD5
5.0.29-beta zip PGP MD5
5.0.29-beta exe PGP MD5
5.0.29-beta Deployer zip PGP MD5
5.0.29-beta Deployer tar.gz PGP MD5
5.0.29-beta Embed zip PGP MD5
5.0.29-beta Embed tar.gz PGP MD5
Tomcat 5.0.28 KEYS
5.0.28 tar.gz PGP MD5
5.0.28 zip PGP MD5
5.0.28 exe PGP MD5
5.0.28 Deployer zip PGP MD5
5.0.28 Deployer tar.gz PGP MD5
5.0.28 Embed zip PGP MD5
5.0.28 Embed tar.gz PGP MD5
Tomcat Web Server Connectors (including mod_jk, mod_jk2, and mod_webapp (the deprecated WARP connector)) KEYS
JK 1.2
JK 1.2 Binary Releases
JK 2
JK 2 Binary Releases
Turbine KEYS
turbine-2.3.jar for JDK 1.3.1 PGP MD5
turbine-2.3.jar for JDK 1.4.2 PGP MD5
Velocity KEYS
1.4 zip PGP MD5
1.4 tar.gz PGP MD5
Velocity Tools KEYS
1.1 zip PGP MD5
1.1 tar.gz PGP MD5

Answer 1

In the Tomcat section, there are a bunch of links to various file formats for each version. Pick the version you want, then click on the file format you would like to use. You don't have to worry about the keys.