Samk,
good for you!!!
Go for it.....but in my experience, go for it slowly!! Pick a job, do it, and then bathe in the glow of doing it yourself. Then tackle the next one!
Oil filter removal tool is a useful tool to have with you - we got ours from halfords - it has three prongs that tighten on the filter as you unscrew it - think it fits onto a ratchet spanner.
To ne honest, I don't remember an oil strainer on my old 2l Aircooled....I am sure we simply undid the drain plug, the oil came out, then we did it up again. Oh - no-one has mentioned running the engine for a couple of minutes to warm the oil - makes it drain faster. Or go for a little run, then do the service 20-30 mins later! But maybe we never found a strainer

You will obviously need something to collect the oil in.....if you look on e-bay you can buy a tub that the oil drains into, you can then seal, and empty at your local tip. Remember, it has to be disposed of properly.
Set aside a couple of hours for the first one. Make sure you have the right size spanner for the drain nut, and go gently with it.
When we put the new oil filters back on, we fill the filter first, wipe a smear of oil on the rubber sealing ring, then screw it in. Filling it first we were told helps with the initial ciruclation when you fire it up again after the oil change.
take care
Em
x