Start writing novels on your computer. Write fiction novels as they take
the least amount of time. They will not bring you too much Simoleons.
When you write, your skill will automatically advance. If your skill is
high enough, you will be able to write more novel types/genres. The most
money can be made from "Romance Novels". You will get royalties for six
weeks once you finish a book. With the "Writing" skill maxed out, you
can make approximately 40,000 Simoleons every week, which is more than
the 34,800 Simoleons you can get by purchasing all neighborhood
businesses, and takes less time to achieve. In three game weeks you
should have a very high speed writing, 9 or 10 novels as best sellers,
and 100,000 Simoleons.