Its hard to get alot of either leveling or money done at the same time unless your using a trick or a guide from the confirmed section or something like that, but I suggest you get 2 gathering profession's(ex. Mining/Herbalism) download an addon called Auctioneer from a site like this one
Here, scan the auction house with it, and it'll add all the current auctions to a database, so when you goto setup your auctions for your copper bars, or what ever it well automatically calculate a good price for your auction in comparison to others, but its recommended you figure out how to guage your prices by yourself once you get the idea of how the auction house economy works. So basically heres what you do for money at lower levels
1. Get 2 gathering skills, and auction your trade goods(Gather whatever you see while you level)
2. Sell your unused greens on auction house
3. Use Auctioneer add-on for help determining a good price
4. You can also use auctioneer to find things that you can buy and re sell for a profit
As for leveling a free guide like James Horde or James Alliance leveling guide is good(at work so cant really search for links)
but for the best guides you usually have to pay for it, which is where the confirmed section comes in handy if you want a good deal on those guides