Part I
1) Why do some say it’s better if you don’t start a sentence with “because”?
2) I’ve seen the word light being used in the past tense in as “lit” and “lighted” are both of them correct?
3) When do we use the word “shall”?
Part II
While writing I have used the following sections of the Purdue OWL:
https://owl.english.purdue.edu/owl/resource/537/1/