But what would you do, Dave? OK, here's portfolio management for beginners. I'm going to say this isn't financial advice, rather explaining what I do.
A lot of people get turned away because they are nervous about stock picking. The cheat sheet is to look at an existing fund you really like. I'm going to use Vanguard's Dividend Growth Fund as an example. I'm not endorsing it, it's closed anyway. But, if I'm honest it's the basic outline of my IRA.

We go visit the nice people at Vanguard to look at the portfolio..
https://personal.vanguard.com/us/funds/snapshot?FundId=0057&FundIntExt=INTAnd we get the top ten holdings list...
1 Microsoft Corp.
2 NIKE Inc.
3 Accenture plc
4 Lockheed Martin Corp.
5 Visa Inc.
6 Chubb Ltd.
7 Diageo plc
8 Coca-Cola Co.
9 United Parcel Service Inc.
10 PepsiCo Inc.
Not a bad start. Several sectors, a reasonably diverse set of securities considering they're all large cap and American. So we check in on each using Google and compare to competitors and check what analysts think. Takes 2 minutes for each. I'll set up an Excel spreadsheet with a basic checklist.. Income good, analysts like, favorable to competition, good management, and the last column I will admit is 'gives me a boner'. Some companies just give you that feeling. If a company gets all the boxes checked or comes pretty close, I'm in. Very Easy.
Now, why do we want to do this? Why not just buy Vanguard? Well, Vanguard does great work and I am stealing their homework but I'm greedy. Vanguard charges .3% to manage the fund. Lower than most but I don't believe in letting anyone skim off me. And we've introduced a strategy. These are dividend growth companies. They should continue to grow and increase the dividend. That's power. I bought Diageo in 2006 and am getting a near 6% dividend based on my 2006 money. I hope I die still invested in Diageo getting 20-30% of my initial investment annually. That's a strategy.
Now rinse and repeat with another 2-3 funds that match your goals and you've just created a portfolio. Easy. And the beauty is that it works for everyone by picking based on risk tolerance.
Not to put all the eggs in one basket, I reserve about 35% of my portfolio for REITs, bonds, foreign, metals, etc. This is where I'm willing to pay the manager. As good as I think I am I have no idea how to put together an Asian small cap fund. I just don't know the companies. And I worry that my "American" view of a company like Samsung isn't what it is in Asia. The good news is that this is pretty close to standard 401 style investing. A little less control but again, we pick on strategy. We're looking to get away from the dollar, really pack in some diversity and some safe havens.
Now I will add that I am more active. I also follow a "dogs of the Dow" strategy where I look for wrongly beaten up companies. Recently, Verizon dropped to $45 per share and I bought like Audrey Hepburn at a little black dress shop. Again, the strategy is to get the best dividend possible from a company in a slump that will likely recover.
http://www.dogsofthedow.com/You might notice that these are generally 'buy and hold'. Well, in a retirement account that seems to work better. This isn't active trading. And my strategies don't always work. But I'm young so being aggressive is right.
Now for the hard part. You need to manage. Once per quarter (maybe when your companies release numbers) poke your head in and look around. Go back to that Google page and check in. Ask yourself if your strategy is working. If not, look up similar funds and consider changes. I have an ironclad rule that any stock I buy for growth (not dividends) I sell half if it doubles. Nobody ever gets hurt by taking profits and playing with the house's money.
If you start doing this and looking at a few different funds from a few different companies you'll start to get a feel for what companies fit your strategy. The whole nut is to get the strategy right.
The empowering force that this has will change your investing. You'll do better because you care. I think a lot of damage has been done as the average worker just funnels money into a meaningless fund. I'll try to help with questions.