All stocks in the US: FSTVX, VTSAX
All bonds in the US: FTBFX, VBTLX
Step 1: Put {your_age}% in one of the bond funds, and the rest in the stock fund.
Step 2: Religiously invest a portion of your salary every month.
Step 3: Don't look at your savings more than once every quarter or so.
Step 3.5: Don't let your spending grow out of control as your career progresses and your salary grows.
Step 4: Retire a multi-millionaire in inflation adjusted dollars after 20-30 years or so.
http://www.mrmoneymustache.com/2012/01/13/the-shockingly-sim...
My wife and I did 50% of our nominal takehome every month in a high COL area. It was fine.
The more you save, the faster you get to Stage 4.
The top Index ETFs that I would recommend (index in parens):
SPY (US S&P 500)
DIA (US DJIA)
BRK-B (Berkshire Hathaway*)
EFA (MSCI EAFE, aka developed countries in Europe and Asia)
EEM (MSCI Emerging Markets, aka China, Korea, Brazil, India, etc)
I would recommend at least 2/3 US indexes and the rest international.
Don't worry too much about international exposure since all US multinationals operate globally; e.g. buying Coca Cola (KO) is actually a bet on economic growth in China.* While BRK-B is not an index ETF, it's actually the first stock I would recommend for new investors to buy. BRK-B is Warren Buffet's company and has broad exposure to the US market.