Taylor.
You can buy a oil filter removal tool from Halfords that you push onto the end of the oil filter (if its a genuine VAG one) and that allows you to remove this with a ratchet.
The sump plug is easily removed once you take off the plastic engine under tray.
The spark plugs are reletively easy to do but some bits and piece to remove first as well.
If you've never done this before then...
Look out all tooling for job, plastic gloves, cloths, oil catch tray, socket set, spanner, oil filter removal socket and new bits to be fitted.
Drive car till engine oil is up to temperature, this makes the oil flow more easily and helps you get as much out of the car as possible.
Park car on level surface, jack up and support front end, remove under tray.
Place oil catch tray under sump plug (this will come out with a bit of force so be prepared, this will also be hot from the hot oil in the sump). Remove sump plug and leave to drain, remove oil fill cap on engine and remove oil filter.
Once all oil has drained out fit new sump plug. Fill new oil filter with new oil, smear some oil on the filter seal and clean the filter housing. Fit filter.
With new oil start filling from engine top, keep and eye on the sump plug and oil filter incase these arnt fitted correctly.
Top up with 4 litres of oil.
Take car off of supports and leave for 1 hour to allow oil to settle.
After 1 hour recheck oil level and top up till max mark.
As for spark plugs basically one at a time remove electrical connection to the coil pack, lever off coil pack. With small spark plug socket and socket extension remove spark plug and refit with new on. Make sure it is tight but not overly.
Refit coil pack and electrical connection to it.
Repeat till all done.
Hope this helps