An inexpensive magnifying glass will do the trick. Don't worry about the number of pests that are about. Many pests require a specific plant as a host, so identification is that much easier. Check to make sure when purchasing a plant to check its cultural habits and conditions. This will help you in the future.
Many homeowners just grab whatever pesticide the have on their shelf and use that.
Be specific with what you spray, and use the manufacturer's suggested amounts. Larvae eats roots and may girdle crowns of broad-leaved evergreens, particularly rhododendrons, azaleas and yews. Look for notched leaves beginning in June. If plant has notched leaves and is wilting, look for larvae on roots. Use a foliar systemic spray when damage begins.