Choose a flat, level surface convenient to your source materials (kitchen scraps, lawn clippings, garden, etc)
Since microbes work best at elevated temperatures, temperature is key to the breakdown of compost. Although microbes generate their own heat as they work, you can help keep them warm by positioning the compost tumbler out of excessive wind and in full sunlight. In hotter areas of the country a shady location may work as well. The fastest decomposition occurs between 104°F (60°C) and 160°F (71°C), but some breakdown will occur as long as the compost is kept above freezing.
Winter - Since the tumbling composter is portable, it can be moved (even when full) by one or two people to convenient locations. In winter, place it by your back door to avoid a long walk to recycle kitchen scraps. Although the microbes stop working when the batch freezes, freezing breaks down fibers in organic material, thus speeding up decomposition in spring. In winter, do not turn the unit, but keep adding waste. When spring arrives the material defrosts, tumble and begin adding materials in the correct portions. You may find you need to add a lot of carbon material to achieve the correct ration, so do not overfill the Tumbling composter during winter.
If you do not use the Tumbling composter in winter, move it to a location sheltered from high winds and snow. Ideally, it should be stored in a garage or shed.