Change the oil at least every 6-7k miles or one year no matter what the dealer or owner's manual tells you. This based on an chemical analysis of the Mobil 1 0W40 fully synthetic oil at that point.

Oil change without jacks

http://www.ppbb.com/scgi-bin/boards/986/museum.pl?read=211869

Headlamp replacement

http://www.bombaydigital.com/boxster/projects/headlamp/

Instrument cluster removal

http://boxsters.addr.com/hacks/cluster.htm

Cleaning the radiators (do it every 15k miles)(removing front bumper)

http://www.realtime.net/~rentner/Porsche/Radiator/Radiator.html

Change your own spark plugs

http://www.ppbb.com/scgi-bin/boards/986/museum.pl?read=217622

Do your own brake pads and rotors

http://www.bombaydigital.com/boxster/projects/brakes/

Bleed and flush brake fluid

http://www.bombaydigital.com/boxster/projects/brakes/bleed_and_flush/

Rear Main Seal

http://www.c-speedracing.com/howto/996rms/rms1.php

Coolant tank replacement

http://www.dietersmotorsports.com/tech/tech9-03-2003.htm

Drain points

http://www.realtime.net/~rentner/Porsche/drains/drains.html

Wheel rash cure

http://www.renntech.org/forums/index.php?showtopic=80&st=0&#entry196

http://www.audiworld.com/tech/ext43.shtml

Car washing

http://www.ppbb.com/scgi-bin/boards/986/museum.pl?read=210212

http://www.carcareonline.com/viewarticle.aspx?art=8

http://www.iq.dynip.com/~gary/hacks/jack/jack.html

Diagnostic codes

http://www.troublecodes.net/Porsche/

Becker radio web site (supplier to most Boxsters)

http://www.beckerautosound.com/

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=26&currentpage=38

http://www.ppbb.com/scgi-bin/boards/986/museum.pl?read=761531

Ignition Switch

http://www.renntech.org/forums/index.php?showtopic=1313&hl=ignition+switch

Replace rotors, pads, brake fluid, bleed system

http://www.bombaydigital.com/boxster/projects/brakes/

Replacing the top

Replacing the TOP - A DIY

http://mike.focke.googlepages.com/checkenginelightcausedbymassairflowsensor

Oxygen Sensors (including discount parts source)

http://mike.focke.googlepages.com/oxygensensors

Open the hood to get at a dead battery

http://www.ppbb.com/boards/ppbbphp/showflat.php?Cat=&Board=ARCHIVES&Number=906376

Airbag light on – early Boxsters

http://www.geocities.com/esklut/airbag.html

A/C Diagnostics

http://www.cb-racing.com/boxster_AC.html

Removing door panels

http://www.ecoutez.net/boxster/door-panel-removal/

Repairing side windows, side window regulator

http://www.bombaydigital.com/boxster/projects/window/

Sensitive Horn (blows when you hit a bump or just very sensitive)

http://www.renntech.org/forums/index.php?showtopic=1728&hl=horn

Relays and what they control

http://www.theschillings.com/boxrelay.htm

Replacing the parking brake micro-switch

http://www.bombaydigital.com/boxster/projects/parking_brake_switch/

What your spark plugs shouldn't look like

http://www.boschautoparts.com/NR/rdonlyres/B99EF8FC-D93F-45C6-BAF7-CEF31665E884/0/SparkPlugFaces.pdf

The below are all at Pedro's:

• Cleaning the Throttle Body
• Bleeding/Flushing Brake/Clutch Fluid
• Installing the TechnoBrace
• Plugging a Tire
• Replacing the CVJ Boots/Half Axles
• Replacing Brake Pads and Rotors
• Making the Pedro Sport Exhaust
• Installing the 3rd Center Radiator
• Top Operational While-in-Motion Hack
• Making a Hi-Flo Air Intake
• Upholstering Interior Pieces in Leather
• Fixing Sticky Radio Buttons
• Replacing the Ignition Switch
• Painting Brake Calipers
• Replacing the Fuel Filter
• Repairing Under-Panels
• Changing the Oil and Filters
• Changing the Spark Plugs and Spark Plug Tubes/O-rings

Coming soon:

• Replacing the Air/Oil Separator
• Replacing the Poly-Rib Belt
• Installing a Larger Oil Cooler
• Installing Carbon Fibre or Wood Dash Kits

http://www.pedrosgarage.com

2GOBOX's list of parts and tools needed to do a 30k

Tools

• Snap-On 3/8 in. Drive Wobble Extension
• Craftsman 8mm Hex wrench socket, 3/8 in. drive
• Stride Tool Type J Oil Filter Wrench – 76 mm, 14 flutes, 3/8 in. drive
• Craftsman Torx screwdriver set
• Scissor Jack
• Hydraulic Jack
• 2 Jack Stands
• 2 Porsche Jack Pads
• 2 Creepers
• 15L Oil Drain Container
• Bottle Spark Plug Thread Lubricant with Applicator Brush
• Motive Power Bleeder
• Motive Fluid Catch Bottle
• 1 set radio removal tools 

Consumables

• 1L Porsche Coolant 
• 1L Porsche DOT 4 Brake Fluid
• 10 quarts Mobil 1 0W40
• 1 Porsche Oil Filter Element, Crush Ring and O-Ring 
• 1 Set Bremo Brake Pads, Front 
• Set Bremo Brake Pads, Rear 
  
• 1 Pollen Filter 
• 1 Air Filter 
• 1 Fuel Filter 
• 6 Spark Plugs