I use Family Search extensively to find info. You need to sign up for a free account (only info required is a name and an email address).
https://www.familysearch.org Along the top, click on Search: Records. On the search form, enter Alexander Chicken and click on Search.
Then use the filter options on the left hand side
Birthplace: UK & Ireland: England:Northumberland
Birth year: 1900
Then you will see a transcript of Alexander's baptism record.
Click on the icon to the far right (looks like a piece of paper with lines on it) and you get this:
https://www.familysearch.org/ark:/61903/1:1:NFGC-WYLWhich gives a transcript of the barebones details - there may be more in the original record.
Click the down arrow next to Document Information and it says the info was transcribed from LDS film no. 1564752, item 5 page 13
Go to Search: Catalogue and put that film no into the search box, it brings up a list of what is on that microfilm - click on Items 3-5: Parish registers of Walker 1848-1941 and you get this:
https://www.familysearch.org/search/catalog/469263?availability=Family%20History%20LibraryThird item on that list shows that this set has been digitised (camera icon on the far right)
Unfortunately this is one of the record sets that, because of the agreement with the holders of the original registers, the camera icon also has a key icon, which means its only viewable if you visit an LDS Family History centre, unless you are a church member.
Rinse and repeat the above for the Parents' names - I usually just use first names in the search so William Chicken then spouse Margaret, filter by marriage place and a rough time frame.
Rinse and repeat again for surname Chicken (no first name) parents William and Margaret, then filter by birthplace and time frame may well lead you to siblings for Alexander.
Some records are digitised and viewable from home, it all depends on the agreement the LDS have with the holders of the records. Its always worth checking the catalogue to see if you can see it from home.
If not and you are not near enough to visit the archives which hold the records, look here:
https://www.familysearch.org/locations/ to see if there is a FHC near you. I am not a church member but visit our local one about twice a month. I take a list of what I want to see and am allowed to print the record or save it to a usb stick. All free, the various centres I have used over the years are staffed by volunteers who have been welcoming and helpful. Their pcs also have access to sites such as Ancestry, FindMyPast etc.
Apologies if you already know all that - and it looks quite complicated written down but the where and how to search is, in my view, really useful. Once you've searched for a few you can do it very quickly and get a 'feel' for it.
Boo