How should i set my investments in a 401k account?

i want to change to a better growth, but i don't have much knowledge of what works best

i have a fidelity account if that helps

basically you can be more aggressive the younger you are (within reason) still keep your money mostly in mutual funds. If you are older than you need more of a secure investments so go with a higher bond diversification. Don't put your eggs in one basket, diversify, look at past returns as a guide but not a guarantee. Be thorough read through some mutual funds and look for 'a' shares for long term investing.

Depends on your 401k. If you have only a select few choices to pick, it's most likely going to be a retirement fund. I only use 401k so I can get the match from my employer. Look at the list of available funds on your 401k.

If you want your capital appreciation to match that of the market, just go with a Vanguard Total Stock Market Index Fund.

Investments in any retirement plan depends on the time you have before you plan to retire. This will allow for ups and downs in the marker. If you have 25-30 yrs. before retirement than you want to take on more risk. If you a close to retirement than you want to take less risk. A good plan is to distribute your investment in bonds; value funds; growth/income funds; and some International funds. A well balanced investments will ride out market changes. No more than 20% should be in any category unless you are with in 5 yrs of retirement then more should be placed in a stable or conservative fund. Always check with Morning Star web site to obtain the rankings of you funds. web site: WWW.MORNINGSTAR.COM There is one other site that will give you good information WWW.FUNDALARM.COM Look for funds with low fees.

401,

Your age is a huge factor. Contact Fidelity and talk to them. Ask many, many, many questions. They will set you up with the plan that is best for you.

EDIT
Make sure, at minimum, you are investing at least what your company match is.

The simplest thing to do is invest in a lifecycle or target date fund. The mutual fund management staff take care of diversifiying your investments for you. They also alter the mix of assets as you grow older to become more conservative (which is important so that you'll have financial stability in retirement). Vanguard, which charges very low fees and expenses, calls these funds "Target Retirement" funds. Fidelity, which is also pretty inexpensive, calls them "Freedom" funds. Pick a fund with a target year around the time you want to retire, open an account for that fund, and the fund management will do the rest of the work for you.

For more information about these types of funds, see the webpage listed below.