Table food is fine as long as it's prepared without added salt or sugar for him.
Here is a great site for infant feeding ideas and info:
http://www.wholesomebabyfood.com/index.htm
But always make sure you nurse or offer formula *before* solids. BM or formula then solids in between. Breastmilk or formula is primary nutrition for the entire first year.
It's fine for him to use his fingers at this point. It helps develop his pincer grips and well as fine motor skills. I would certainly put infant fork or spoon on his plate each time but let him do his thing right now.
Yes, the sleep pattern will def. change. Infant sleep is never static and particularly at a year old. They become much more aware of the outside world and when they wake inthe night theydon't want to miss out! It will pass though.
I've never put my kids in daycare and they are exceptionally smart and well-rounded. My son attended a preschool ( a real school-preschool-grade 5-not a daycare saying they were a preschool) right before he turned 4. he went 3 mornings a week. It was a good preparation for his entry to pre-kindergarten the next year. We attend lots of activities like storytime at the library, playtime at our local rec center, music class, we do at home learning activities, go to museums, etc. Moms groups are a great resource for lots of social and learning activities.