Hi Jimbo
RE What to invest in.
One "problem" with AIMing , and the only one I can see, is an individual stock going to zero.
Funds of any type avoid this "problem".
Of the two types (passive and actively managed) passive index funds are the cheapest and the most transparent in what they own.
For mutual funds Vanguard can not be beat.
Exchange Traded Funds are excellent also.
With both you can choose to diversify by either style, or industry.
For AIMing having a slightly higher beta(volatility) than 1 is better but this is more of an issue with individual stocks and industry funds than of style funds. For instance a Biotech fund might be better for AIMing than a Healthcare fund.
In any case you don't want to own two funds that hold the same stocks. For instance a saw both a growth and value fund from the same company have fairly large holdings of Microsoft.
Toofuzzy
Take the road less traveled. It will make all the difference.