What age do babies...

start holding there own bottle?
start talking??
begin potty training?
start crawling??
start walking?

1) around 6 months or so
2) different for every child... some start at about 10 months, others decide to wait much longer
3) Around 2 years of age (that is just an average)
4) Around 6 - 8 months
5) Around 1 year

These are all averages as EVERY baby is different and grows at their own pace.

"What to Expect: the first year": excellent book

Amazon.com: What to Expect the First Year: Books: Arlene Eisenberg (http://www.amazon.com/What-Expect-First-Arlene-Eisenberg/dp/B000KKNHD2/ref=pd_bbs_sr_1/103-6996612-9303838?ie=UTF8&s=books&qid=1177587117&sr=8-1)

All babes are different. Walking average is a year. Potty training from a year and a half to 2 years. Crawling about 6mths or so. Bottle holding starts about 4-6mths. Talking REALLY differs... depends on what you mean by talking. Fluently about 2 1/2 years. Saying dada about 6mths or so. My daughter did everything "early" by most website's "average" so I tried to put up their "averages"