This time of year the hide is not prime.
You will have to prime it before tanning or the hair may fall out.
You also have many types of tanning, hair on, garment, leather, sued, hair off.
There is a big difference between finished leather on what can get wet and what can.
Where a coat made out of an alum tan in the rain a few times and most likely the hair will fall out.
And fleshing...thats the number one most important part. You need very strong hands and arms. You need something to flesh with. You need to find what works for you.
I was a taxidermist and best hides are prime from fall and winter and working them is best done in cool weather as fleshing takes awhile and summer heat can cause the hair to slip.
Summer is best for making raw hide.

Thats what I am doing now.