ONLINE SAVINGS ACCOUNT- The best place for money you need in a moment’s notice is an online savings account. Even though interest rates for online savings accounts are low, around 1%, they pay the best returns relative to the savings account offers among all the financial institution.
EDUCATION- Don’t buy anything until you invest in educating yourself about the markets. Knowledge on the subject helps with everything.
COMPANY RETIREMENT PLAN- The investments available through a company retirement plan are the same as those you might choose personally. One major advantage with company sponsored retirement plans is that usually the funds are tax deferred.
You should never put all your eggs in one basket. Having accounts with more than one broker affords you more protection, if you need it. You’ll also never know everything about a company and you won’t get the kind of deals that Warren Buffett gets. Don't put any more than 3% of your portfolio in any one stock. But if the stock grows past 3% you can keep it.