In general:-

• Visit PerlMonks
• Read the Perl Black Book
• Install Perl and (optionally) web server software on your own machine for test purposes
• Install MySQL
• Perl comes with documentation, so read it
• Find a text editor with Perl syntax colouring features
• Learn to plan programs before writing any code
• Ignore the hype about PHP and decide whether to use it based on its real strengths and weaknesses

If using Windows:-

• Install Apache instead of using the web server included with Windows
• Install ActivePerl from ActiveState in C:\usr instead of the default C:\Perl (so the path will work on most UNIX hosts too)

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"Every program has at least one bug and can be shortened by at least one instruction -- from which, by induction, one can deduce that every program can be reduced to one instruction which doesn't work." -- (Author Unknown)