Try to keep bits of food off the floor, especially food that your baby could choke on. If you drop a glass on the floor and it breaks, protect your crawling baby's hands and knees by first vacuuming and then using a wet paper towel to get any remaining slivers. You do not want to trip and spill boiling water on your baby. Teach baby from the very beginning that the stove is off limits whether it is off or on. Tables with sharp corners and edges can be protected with rubber corner guards.
Bookcases are great attractions for young babies.
Make sure they are fastened to the wall so your baby can't pull a bookcase over on top of himself. Cover unused electrical outlets with plastic caps. You can also obtain boxes that will cover outlets that are being used. Where possible, place furniture in front of outlets. Never leave extension cords plugged in where your baby can find and chew on them and be seriously burned or shocked.