Well, for Humbrols, which I use, though I do all my flesh tones with oils, try 94German Pale Yellow as a base. You can add a touch of red, though
it has to be a touch. Red is a color I call "coruptive", as in it can easily corrupt a mix if you're not careful, so a little goes a really long way. As it is, 94 is a pretty good base flesh tone though.
I still use it as my base for which to lay my oil mix onto, but before I got into oils, it was my primary flesh color. I don't know if you want to add shade and highlight (you did say that you didn't want to experiment too much), but if you do, a good red/brown will work. Try 160 German Camouflaged Red Brown, with maybe a touch of black or dark blue to kill some of the red. White to the base will work for highlights, though you may want to add a minute amount of red to pinken it a tad.
If all else fails. Red, white, yellow and black will make a passable flesh tone. Mix the white and the red first, then add the yellow to make a yellow-tan, and finally a touch of black to gray it a touch and also to kill the orange hue. Just add any of the colors you deem neccessary to adjust until it's where you want it, though too much black will screw it up and make it too gray. Shadow and highlight as I described above. Blue and/or green can kill red, as can black, so keep that in mind if your shade color seems too red.
Mess around on a card or something to see where you need to take it.