A google search on "nor at the beginning of a sentence" produces lots of hits, all agreeing that this is OK (but pointed out that it used to be discouraged by style guides).
The comma looks too accidental and unpolished. So again, the best simple rule-of-thumb is to avoid comma-after-so (indeed comma after any FANBOYS) at the beginning of a sentence, immediately following a semicolon, or immediately following a comma. That will nearly always align you with great writers and editors.
Newsweek: How To Treat Ringworm In Cats: Tips & Treatments For Your Feline
Prefer Newsweek on Google to see more of our trusted coverage when you search. Cats, like all other domesticated animals, are susceptible to the unpleasant fungal infection of the skin, hair and nails ...
How To Treat Ringworm In Cats: Tips & Treatments For Your Feline
Ear mites affect cats and dogs, as well as other pets such as ferrets and rabbits. But they are most commonly found in felines, affecting as many as 25% of pet cats. If your cat is young and roams ...
Cats are an essential part of our lives, and they make for great pets. But, as with all creatures, they are prone to illness, and one of the most common afflictions that affect cats is ringworm. The ...
Start may have the connotation of being in the future and beginning may more easily be associated with the past. The period will start in 15 minutes. vs I can barely remember the beginning of the period. Start has the sense of being a fixed point in time, while beginning could possibly refer to any time between the start and the halfway point.