If heat is a problem, I recommend installing the App Temperature Guage Pro (TG Pro). It isn't free, but it's fairly cheap.
Firstly, it shows you the temperature at your highest reading sensor AND current fan RPM in the top menu bar at all times.
Secondly, by clicking that display, you can get a readout of all your temperatures across the computer.
Lastly, and perhaps best, you get more intricate control over your fans. The default setting is System, meaning the OS is in full control. The next setting is Manual. This means you adjust a slider to control your fan speeds. Be careful with this one because regardless of how hot you get, that's where you'll stay. The last option, and the one I keep active, is Auto Boost. Within the app's preferences>fans widget, you can set up a series of custom rules. For instance: Exhaust to 100% when any sensor is above 80˚C. You may use this to ramp up your fan speeds at cooler temperatures than the OS normally would. In this mode, the system is more or less in control until your computer hits your rules, at which point your controls take over.
If you still find yourself running too hot, consider investing in a cooling pad. It's basically a device with fans inside it, that helps keep air moving under your computer. They run from $20 to $40 from what I've seen.