Start with what must run
Small solar kits are easiest to compare after listing the loads: lights, phone charging, pump, router, fridge, tools or laptop. The load list drives battery and panel decisions.
Questions before buying
Check where panels can face the sun, where batteries can sit safely, what happens in winter, how cables are protected and whether the system will ever connect to fixed wiring.
Safety boundary
Fixed electrical work and higher loads need competent review. Treat this as planning guidance, not a wiring tutorial.