That's a pretty open ended question. The best answer is that 'it depends'. How do you intend to use your trailer? Campgrounds? RV Parks? Dry camping? Some campgrounds have all the amenities, electric, water, sewer, cable TV, wifi etc. Others not so much. US Forest Service and some state campgrounds don't have any hookups so you need to bring your own water & find a dump station somewhere to empty the black/grey water tanks. For dry camping you might consider a generator to run AC or microwave and recharge batteries. Here's a site with lots of tips and some checklists to get you started:
www.rvbasics.com
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