Starting solids can be exciting! The first foods should be rich in nutrients and gentle on the digestive system, so think iron-fortified cereals, pureed/mashed bananas, avocados, sweet potatoes or cooked carrots.
Introducing one food at a time lets you monitor for any allergic reactions or digestion issues. Offer the same food for a few days before introducing something new - this also helps establish a baseline for normal bowel movements and potential changes related to new foods.
Some first foods can be combined too - think banana and cereal mixed, or pureed pears and peaches. Just ensure portion sizes are small and gradually increase as baby adapts.
Remember, every baby is different, so consult your pediatrician if you notice any digestive issues or allergies. Also, breastmilk/formula should still be the primary source of nutrition in these early days of solids exploration!