Brownies are easy to make, though a bit tricky at first try. Indeed, this "most forgiving of recipes" is a breeze to prepare. Nonetheless, here are some tips that would surely make preparing them a pieces of cake.
When making brownies, use butter as it has more flavor and will result in a fudgier product.
Use brown sugar for a stronger flavor in your brownie mix. Otherwise, use white sugar.
Use a metal pan when making brownies as it heats evenly than a glass pan.
Don't cut your brownies when they're fresh from the oven. They're easier to cut/slice when cooled.