There isn't exactly an official guide but here are a few pointers that may help. Exchange that you'll definitely want to check out are BTC-TC and Bitfunder. As for stocks, it depends what you want to invest into. There are mining companies, BTC selling companies, investment bonds, and futures/options. Some of the popular ones these days are :
•ASICMiner & other mining bonds
•Satoshi Dice
•CoinBr options
•MPOEx futures/options
Before investing, I HIGHLY recommend doing all the research you can. Make sure that you know what you're getting into before investing. When reading new IPO listings, be skeptical and have a critical eye. Does it have a sound business plan? Remember, its your BTC and losses can hurt as buying more BTC these days can hard to do with the rising prices. I'm sure others will post other stocks/bonds options here.
Best of luck
For beginners, this is the most palatable advice one can give.
I kind of just threw myself in there. Lots of BTC exchanges are rather newb friendly, but that can be really dangerous for people who aren't diligent with their investments. Remember, there's no "get rich quick" scheme. Investments, BTC and $ alike, are supposed to be investments! The key is finding good people to invest in, not necessarily good stocks.
Make an account over at Havelock and just browse around, follow trends for a week or two before plunging. Good luck!
