Good for you-congratulations!
In no particular order but i would say
1-Get paper bills & bank statements in joint names to start keeping for your future FLR & ILR
2-Send a letter to the main credit agencies explaining why your wife isnt on the electoral roll. getting credit will be hard. Look at Martin Lewis website we followed his advice to get my partner a credit card after being here a few months - rubbish fees and limit but better than nothing
3- Dont get downhearted if your wife gets homesick and has a bad day & everything british annoys her
4- Roll your eyes if your wife laughs at how small english sizes for everything from laundry tablets to boxes of aspirin - though why one needs a box of 500 aspirin is beyond me
5 - Dont underestimate the rising prices of the future visas as people have been posting in this forum - we started saving straight away
6 - Ignore the right wing media (usuallly the mail and telegraph) hysteria about immigration-instead laugh at their stories of how people can just walk into the UK at the drop of a hat and reflect on how, after all the hoops you had to jump through, untrue the stories are that then factions of the public believe
Finally be happy - took us 20 years of long distancing but next uear we are going for the ILR and are so happy
Hope your wife settles here quickly and loves it and you are both happy for ever
My partner misses boxes of 500 aspirin and walk in closests but has never looked back since arriving - he marvels at the BBC; the NHS; public transport and such things and says we brits dont know how,lucky we are