Nail care is important. Clean nails harbor fewer bacteria, and short, well-trimmed nails (and toes) will leave you less vulnerable to problems like hangnails and ingrown toenails. It's easy to find nail and toe clippers in those cute faux leather, zip up kits, but save your pennies and invest in a pair of precision nail clippers and a larger pair of toe clippers.
Look for clippers that will fit the curve of your nail so that one or two quick snips will do the job cleanly. That way, you won't need to use a file to tidy up afterward. Toenail clippers should make relatively straight cuts and be strong enough to cut your big toe nail without shredding it or forcing you to shift your grip.