I am a huge advocate for homemade baby food. I do like the convenience of just grabbing a jar of pre-made stuff once in a while though, heck! i got 50 jars from someone who didn't need them. Was I going to turn away something that was free? NO! and that really helped while we were moving. (i was without pots/pans/microwave... for like 3 weeks!)
but when you make your own baby food, you now exactly what your baby is eating. No preservatives, no salt, and less cost. (that is always plus) so here is my favorite website for baby food tips and recipes: http://www.wholesomebabyfood.com/ it has AWESOME tips, facts, recipes, ideas... a GREAT resource.
Also, check out their teething biscuit recipes!