Ponds for new homesteader

I live in a temperate climate with all four seasons , thinking about starting out my homestead/land in a principles of permaculture which im a newcomer , but as its a pond forum I've got some questions and looking for tips for one.
1) I've only got around 2+ acres of land and need some tips on what size pond would be enough for such place ? My land has some old trees some arable land , and all around it its farmers fields for monoculture crops .
2) Is it doable and possible to make pond without the pond liner ? And how to make sure it wont drain ?
3) What should i look for when looking for best place for a pond ?
4) Is aquaponics possible with pond alone ? And what kind of fish to look in to for smaller ponds that are easy to grow for newbies and dont require much input year round ?

Any tips or ideas regarding the subject is appreciated
Attaching the plan of my homestead

There are multiple answers to seemingly simple questions;
- ponds can be sealed with the clay rom down deeper
- contractors used to doing this stuff are good to talk to
- There are permi contractors who understand your mindset
- location is a function of the grade of the land, to fill it and then draw from it
- will you drain it with pumps or gravity?
- do you have any natural water flows on the property?
- can you have a small pond and pump water to a large 1000,000L tank?