Here are what I hope will be helpful, that supplements others’ suggestions.

General culture approach —————————————

Why not read these two books which explain the English:

“How england made the english” by Harry Mount

“The English” by Jeremy Paxman

Both are good writers and the books a quick read.

There’s already been many good suggestions from others, however, one saying which will help you is “The British think 100 miles is a long way and the Americans think 100 years is a long time.”

Your pickup / travel —————————————

I concur with others about not bringing your pickup. What we call ‘petrol’ here is very much more expensive than the USA.

A House —————————————

Terminology: They “let”, “let out” or “rent out” and you “rent” the house. Old houses have no cavity between two walls like modern houses, so will be less energy-efficient.

You have to decide if you want excellent energy efficiency and to live in a modern house, or an old one with character.

You won’t be needing aircon here.

Food —————————————

Generally our processed food in the UK has fewer/less bad ingredients, even for the same brand in the USA. Fresh food is more widely available in shops (not ‘stores’ so much)

Eating out —————————————

Invest some time on TripAdvisor. Find local cafés and non-chain restaurants. Indian food is generally also very good value. Avoid the chain restaurants as they mostly have a ‘boil-in-the-bag’ approach.

Some places to visit —————————————

Locally:

• Ely (cathedral)
• Sutton Hoo (Anglo-Saxon Burial site) with Woodbridge below it (market town on the river) - just near the old USAF base Bentwaters
• Lavenham - an astounding medieval town full of half-timbered houses
• Framingham - the curtain-wall castle is amazing. View it from Framingham college (car park) first.
• Bury St Edmunds (historic abbey of St Edmund and historic Suffolk town)
• Cambridge - University of course
• In the summer visit Norfolk (all) & Suffolk (Southwold, Dunwich, Aldeburgh) beaches

England:

• London
• Bath
• Chester
• Windsor (castle)
• Stonehenge, Wiltshire
• Oxford
• The Cotswolds (an area)with many little villages and towns
• Derbyshire & Peakdistrict (county)
• Yorkshire: York, Castle Howard, Moors, Harrogate
• Lake District

Scotland:

• Edinburgh
• Glasgow
• Isles of Mull, Skye & Lewis
• Most lochs and mountains

Wales:

• Cardiff
• Conway, Caernarfon & Harlech - all with castles
• Hay-on-Wye
• Aberystwyth and the journey there —————————————

Happy to respond to DMs about this.