Students sometimes get into trouble when they use capitals to add emphasis to their writing.
Wrong – Even though I like Reading, I would rather study Programming. (There are the general names of subjects, not the names of specific classes.)
Right – Even though I like reading, I would rather study math.
There are 6 uses of capitals:
1) The 1st word in a sentence or a direct quotation:
She wanted to go to the beach.
She said, "Let's go to the beach."
2) The word 'I' and people's names:
I feel the need for speed when driving.
Larry likes lemons.
3) The names of specific places, institutions, and languages:
The Sorbonne is a university in France.
French is the language the French Foreign Legion uses regardless of where its soldiers come from.
4) Product names:
Xerox makes copiers, but not all copies are xeroxes.
A smartphone can be an iPhone or a Blackberry or an Android.
5) Calendar items:
I sent my friend a Hanukkah card while she sent me a Christmas card.
Thanksgiving always falls on the fourth Thursday of November.
My doctor is named Dr. Payne.
She always keeps the latest issue of MAD and National Lampoon in her waiting room.