mate, in the nicest possible way, if you spend some time reading the stickies and use the search functions on here you will be well on your way to being an expert on the subject.
£80.00 is a decent budget and will get you some good products.
ideally you need to do the following.
1) wash the car with a decent shampoo using the 2 bucket method and use a decent wash mit (total £15.00)
2) clay the car (clay and lube £25.00)
3) wash again using 2bm
4) polish the car (polish and pad to apply with £15.00) microfibre cloth to remove
5) wax (search for decent waxes, start with the more reasonable soft waxes) £10.00 - £40.00 again apply with a pad and remove with microfibre.
other steps can be added but this should see you fine for the time being and should bring your paint up a treat.
also invest in some tyre dresser, alloy wheel cleaner and trim dresser and you should be sorted

i do reccomend researching and reading the stickies here to get a feel of everything, this site has been a great help to me.