I regularly work on my 306 to keep it 'cheaply' on the road and have taken some pictures of the work now and then.
For each job I always refer to the Haynes manual, and supplement that with information from the internet. Most of what I find on the internet is very useful, but a lot of the information in the Peugeot forums and YouTube is just plain wrong and misleading, so you have to be careful. I hope you find the information on these pages useful, but take it with a pinch of salt because I am only an amateur doing what I can.