Sandu, you can just watch it when you want.
Here are the main points, well the ones I can remember:
Keep rodents out
Keep temperature as stable as possible
Change fluids before storage, not afterwards
Trickle chargers??? Fire risk, best to listen to that part yourself.
Put it away super clean inside and out
Car covers, debatable benefit
Handbrake off
Fuel, B0 if you can, ie no bio ethanol
Don’t start it up over winter, leave it until you want to start to use it again. I like starting mine, but will try to resit.