「go」と「home」の間に「to」を付けないこと

I arrived home this evening close to 11 pm, and I started to eat shortly after that. Now I've finished eating dinner, including these green soybeans.

• 枝豆　green soybeans (definition from jmdict)

× As I was going to home, it started to sprinkle.
◯ As I was going home, it started to sprinkle. <- "home" is a special case

• sprinkle 少量、わずか、小雨(definition from Eijiro on the Web)

A little bit of rain is actually comfortable. A lot is not.

× On Monday, as I was going work, it started pouring. <- sorry, but "work" isn't like "home" above
◯ On Monday, as I was going to work, it started pouring. 

When I got to class, I was kind of wet.

• kind of ある程度｛ていど｝、やや、多少｛たしょう｝、 ちょっと、なんだか、いくらか、まあまあ、幾分｛いくぶん｝、どちらかといえば、いわば、まあ、大 体｛だいたい｝～といえる、～とか、あれでも～の◆断定を避けるため、表現を和らげるために使う。(from Eijiro on the Web)

× Rainy season isn't over yet, so don't forget your umbrella when you go to somewhere.
◯ Rainy season isn't over yet, so don't forget your umbrella when you go somewhere. <- "somewhere" is like "home" above; don't use "to"