http://www.mrmoneymustache.com/2011/05/18/how-to-make-money-in-the-stock-market/^ Good place to start.
http://jlcollinsnh.com/stock-series/^ Super explanation of the whole thing...
I am a bit confused on the types of accounts you have. You say that a few of them might be an IRA, but they only contain one type of fund, so do you mean you have a bunch of different IRAs (which are a type of account - could be a traditional, Roth, Simple or Rollover IRA)?
What do you have your part time and current 401K invested in? You mention specific funds for the second and third items on your list (that you think are in a type of IRA) but you don't say what's in the actual 401Ks... that would be something to see.
Big question is who do you have all of the accounts with? The second and third seem to be be managed through Dodge & Cox mutual fund company (so like Vanguard, Fidelity, Merrill Lynch, etc... companies that invest your money for you), but you could just be invested in their mutual fund but have your IRAs through someone else? A bit confusing... and while the expenses on the funds that you're holding aren't outrageous, they definitely aren't as good as what you could get from someplace like Vanguard using their total stock market index fund, and mostly I'd be a little concerned that this place has never contacted you or asked if you need any help understanding your investments.
I have my accounts through Fidelity primarily because that's where I had my own 401K, and I've been really happy with them and their service. I really liked their user-friendly website, and their Spartan series of index mutual funds track well with Vanguard's versions, so didn't see the point in moving everything over to Vanguard (the favorite investment group around MMM and most FIRE sites - and with good cause) .
From what I've read tho, the D&C company seems to be a decent one, but concentrated on a very small stable of mutual funds, so that means that you will not have the access to outside funds without them charging you more fees, and probably won't get much in the way of online or contact/guidance.
So basically:
1. part time 401K
What company is this with? What do you have your money invested in in this account?2. Dodge & Cox Stock Fund - $24,437
This is a stock market mutual fund. Call up the company if you can't figure it out through online access what type of account this is - There are different types of IRAs out there, and it seems odd that you'd have two different ones holding only one mutual fund each with the same company... 3. Dodge & Cox International Fund
This is another of the D&C's stock market mutual fund offerings, just instead of the U.S. stock market, you've got a whole bunch of international stock markets in there. Same as above otherwise. 4. HSA Account
Good for you - do you understand what an HSA account is? Who do you have it with and what is the money doing in there?5. Current 401K
Same as above - who is it with, and what is the money doing...6. Savings
Awesome! Depending on your family size and job stability, I'd be more comfortable myself with about 6 months worth of expenses in here for an emergency fund.So a few other things that might be helpful to know - how old are you, do you have or are planning on having kids, do you have debts... and how much risk are comfortable with (because right now, the two funds you've mentioned above are extremely risky - not that this is necessarily a bad thing, but the D&C funds actually lost more than average funds in the 2008 crash due to their investing style according to the stuff I read, so staying with those particular funds might not be a good idea compared to just going into index funds).
As far as what funds you can invest in for the HSA and the 401K, if we know who you're with, then we can sort of tell you what to look for on your own list, so you can cull down the choices and ask out of a few instead of trying to list dozens of the different funds available. :)