Ron, what we are all trying to do here is illustrate how to research anyone in your family tree who lived in the UK.
Bear in mind that any worthwhile hobby usually involves some investment of time and money.
Yes, it is important to spell the names of people and places appropriately, or you will not find the ones you want.
Sometimes you have to try variations of the spellings to find what you want, but beware you may find a lot of other stuff too!
You have to become a detective and find supporting evidence that determines which facts are relevant and which to ignore.
Transcripts of many of the documents you need are free, but you need to know which web sites to search to find each one.
Photo-images of many of those documents are only available via a subscription service (Ancestry, FindMyPast, etc).
BUT the most important documents are UK
Birth,
Marriage &
Death Certificates that are NOT available via any subscription service, but must be purchased from the UK
General Register Office (
GRO).
OK, let's answer some of your immediate questions and then get back to the UK research process.
To find
Bethersdin, Kent, England just enter that into the standard
Google Search engine and it will suggest you mean
Bethersden, Kent, England and among many other entries provide a
Wikipedia page giving full details of the village with a map.
You will see it is near
Tenterden where the birth was registered, so the
i is a mistake for
e.
Find A Grave says
George Clarence Hook, Jr lived in
Marshall County, Minnesota, USA so not a subject for UK research.
Perhaps you mean
George Clarence Hook, Sr who we are researching here, but it is fairly common for people to adopt different names over their lifetime. Since he also spent most of his life in
Marshall County, Minnesota, USA you should find when he added
Clarence to his name in the
USA Census records on the
https://www.familysearch.org/ web site.
Now let's look him up on the
https://www.gro.gov.uk/gro/content/cert ... /Login.asp UK
General Register Office (
GRO) web site where you must register an account and login, which is free.
Then choose to search the
GRO Indexes at
https://www.gro.gov.uk/gro/content/cert ... search.asp.
Select
Birth and enter the name of
George Hook, Gender
Male and Year
1869 as shown below but note you can also filter on
Mother's Maiden Surname that is NOT possible in
FreeBMD for entries before
1911.

- GRO Index Search Filters
- GROIndexSearch.png (45.9 KiB) Viewed 9251 times
Click
Search to get
Results similar to those in
FreeBMD but with
Mother's Maiden Surname included, which you know from Find A Grave is
Stokes and confirms the
GRO Reference for the birth of
George Hook is
1869 June Quarter (
Q2) in
TENTERDEN Volume 02A Page 597. So scroll down to discuss your next options.

- GRO Index Results List
- GROIndexResults.png (42.72 KiB) Viewed 9251 times
You can record that
GRO Reference in
FH as the
Source proof for his
Birth Event alongside the Find A Grave reference.
To get formal proof of his
Birth Date and
Address plus his
Parent's Names then you must buy the
Birth Certificate.
Click the
PDF button next to
George Hook to order a
PDF download costing
£6 (about
$7.50).
Otherwise, the best you can do is search for a
Baptism entry like that found by Helen on the
https://www.freereg.org.uk/ web site, or search
Census records on the
https://www.familysearch.org/ web site, but may not improve on the information you already have in Find A Grave.
Once you know the parent's names, you should be able to find their
Marriage GRO Reference by searching
FreeBMD.
The
UK Census 1871 search should find the family household giving approximate
Dates &
Places of
Birth for them all.
Similar details should be found in the
USA Census 1880 onwards.
Then you can start the search process over again (the same as we've done for George) for each of his parents and siblings.
Do you need any assistance with any of the techniques introduced so far?
NOTE to Helen:
Is this basic UK research process worth documenting in research:index|> Genealogy Research to supplement
Getting Started with Genealogy Research and
Genealogy Presentations?