How do you maintain a classic/hardly driven, stored car?

[Barni]

Hello again peeps,
I've read a bunch of info on the net in regards to storing a car long term and what is required. Referring to long term garage queen. Some things suggested is to put it on stands so the tyres don't get flat spots, start the car weekly or fortnightly, drive it for a little if possible, block off exhaust pipe and air intake so no rodents get in.
Can't find anything on oil changes and other fluids such as radiator, brake fluids....how often do these need to be changed?
How often or long should you drive the car to keep it in A1 condition?
And other tips? Plastic cocoon or just car cover?
Appreciate the feedback