you dont need to be an expert or spend loads of money on cleaning gear to has a good looking clean car.
basically ive probably spend about £30-40 on cleaning stuff and if i can be arsed i can get it gleaming.
Personally i dont see the pint of spending loads of money on cleaning stuff ,which at the end of it all your cars just going to get dirty again.
i wash mine every weekend tho just to keep it looking clean and maybes put abit polish on if i have enough time.
for the trim i bought some turtle wax stuff which was about 3quid.my rub strip where gray at first but after using that a few times it comes up nice and shiny

.I use some extreme tyre shine aswel which is a fiver and its quality.makes them really stand out