Teresa, I can answer your questions regarding PV (Photo Voltaic) Cells aka solar cells. Solar cells produce varying amounts of DC (Direct Current) voltage, dependent upon sun intensity, cleanliness of panels etc. How they are wired depends on the quantity and output of the individual panels. For example, all the rage today is solar assist for homes and buildings. These solar arrays are regulated at approximately 240 VDC, way more than a typical RV needs. Many stand alone panels such as the single one you have will generate enough voltage to damage a battery and hence they must have a regulator installed in the circuit to keep the voltage output in a desired range, typically no more than 14.5 VDC. Any of the sellers will gladly give you a wiring diagram, so can I "IF" I know the specifics of your cells and how many you will be installing. You want the final voltage for a type set up you are describing to be as close to 14.5 as possible. This is attained by wiring in series and parallel. Series gives more voltage, parallel gives more current or amperage.
Portable stands are available and can be a DIY project. The array needs to face south at a 45 degree angle. This changes with local and season. Make your stand with the ability to be adjusted to track the sun. Find south with a compass, then you have to adjust for magnetic variation for your local. Here's an easy way to find magnetic variation for where you are, call a small local airport, pilots HAVE TO KNOW the Mag. Var. Once you find this out you add or subtract depending on what you were told to find true south. For example, I live in SE PA. the MV here is 12 degrees west. West is best and east is least ??? I add the 12 degrees to find south. So when the compass is pointing to 168 I am at south for my solar panel direction. Now keep in mind this is for maximum efficiency, you can also get by with just using the compass and a DVOM (digital volt ohm meter). Just watch the voltage spike the highest when you are most in-line with the sun. Put the volt-meter between the PV cells and the regulator. You can even move the array as the sun moves. It all depends on size and mount. Putting the PV Cells on an RV roof is the least efficient way to utilize solar generated power. A non adjustable fixed mount is next least efficient, even if it is adjustable.
Battery charge monitors. A simple one could be found at your favorite RV supply store. My RV has a simple LED bar graph that works OK. You can also get a portable unit with 2 short wire leads at your RV store. Yet a carbon pile (loading resistance type) can be bought at harbor freight for a small amt of $. If you really want the best hit me back.
You ask, "any experience with this" Yes, I am involved in Photo Voltaic Research at inception level, we are developing new and better composite components to increase PV efficiency and life expectancy. Our solar array at the lab is fixed, has several hundred 3 x 4 panels and covers several acres of land. Hope this helps. J Tom