Grammar Question

For words like 'Pharmacy' and 'Pharmacist' am I required to capitalize them? (Capital P)

No. Common nouns do not need capital letters.

Otherwise, you're writing I went to the Shops. I bought Fish. My new Shoes started to hurt my Feet. And that's ridiculous.

Though you only have to look at some of the thread titles to see how many people fail to see that....

I may be guilty of this..

For proper nouns like the names of places, or the adjectives from that.
e.g. the country Germany
but a German student.
(And some others I can't remember off the top of my head.)
And names, so like:
"Hi Stuart!"
And at the beginning of sentences (providing they require a full stop.)

The benefits of learning German are that:
- you can understand German speakers
- you increase job prospects
- you can go to Germany on holiday and experience new culture

...but if you were to add full stops to the end, you must capitalise the first letter of each sentence.

The benefits of learning German are that:
- You can understand German speakers.
- You increase job prospects.
- You can go to Germany on holiday and experience a new culture.

And another one is "Her Majesty".