Hi & welcome the best bits of advice I can offer are look into what sort of land & livestock you want to keep & what you want to use them for for example goats & sheep may look similar but are actually very different & have different requirements & ducks & geese are both waterfowl but geese also graze a lot & can be aggressive & ducks tend to be more skittish but lay more in the year. With regards to the land you'll find flat land & hill land is farmed very differently & for example if you fancy growing crops will have different soil types in different parts of the country.
There's loads of different regulations for each species as well so looking on the dreaded defra website is always good.Also go to the library & look out for good books - there's also great mags out there like Smallholder, practical poultry & country smallholding for good reads.
The 1 thing that you may not want to hear but I feel all newbies should is slaughtering & culling of stock & selling them - It's not nice but if you wan't to eat your own meat you have to work out how you are going to deal with this & with sick stock or stock that are no longer breedable & excess males & related animals are always issues - many can't afford to keep them as pets ( just something to consider)
If you want to live up in the hills of Scotland here's a few things I'd be doing especially if I wanted livestock as big as sheep & pigs ect:
Buy a 4X4 even if its a small one as their great for towing & getting unstuck in winter & trailers but you may need a trailer licence.
Buy a big chest freezer - great for when you get snowed in or too busy to go to town plus you can fill it with home grown grub
- also when they die their great as rodent proof food stores.
Back up generators are always great ideas as are waterproof trousers as your going to get messy!
Right after all that good luck I hope I haven't scared you off x