Plan ahead and set your goals (rather your young or old makes no difference - just get started), ie: I started at 70.
Think both short term and long term
Think cash flow
You don't need a ton of money to get started.
My investments (silver, gold), cash flow real estate, revenue producing farm land (waiting for Hemp production),gas and oil.
I do not buy stocks or mutual funds. I do not believe in 401k's or Ira's.(cashed all those in)
Learn and copy what the wealthy do.
You may find this as a starting guideline:
http://youtu.be/hrnND0iTfjo (Knowledge is Freedom)
http://idealchoices.info Understanding Bitcoin