Conversation so far:
who did Snoop Dogg sign with?
Snoop signed with Master P's No Limit Records.
how old was he when he got his start?
CANNOTANSWER.
where was he living at that time?
CANNOTANSWER.
where else was he successful?
In 2004, Snoop signed to Geffen Records/Star Trak Entertainment both of which were distributed through Interscope Records.
what happened after he signed with  Geffen Records?
The Masterpiece.
"Drop It Like It's Hot" (featuring Pharrell), the first single released from the album, was a hit and became Snoop Dogg's first single to reach number one.
Did he have success with any songs?
His third release was "Signs", featuring Justin Timberlake and Charlie Wilson, which entered the UK chart at No.
2.
This was his highest entry ever.

Question: What success happened later on?
Self-contained rewrite: What success happened after UK chart at No. 2?