fandom_grammar has a great post on
important grammer rules.
In the linked article something called "bad parallelism" is discussed. Here's the incorrect example given:
Harry made salsa, guacamole, and brought chips.
Er. I am pretty sure I got this wrong before. :S
The author gives this as a correct rewrite:
Harry made salsa and guacamole and brought chips to go with them.
It's obviously a question, too, of when to use a comma and when an "and".
Would this rewrite work as well?
Harry made salsa and guacamole, and he brought chips as well.
ETA: Here's a
grammar page I found helpful/interesting.