QUESTION: Fix punctuation: Again in a nutshell
ANS: Again, in a nutshell:

QUESTION: Fix punctuation: Heat transfer theory helps explain practical aspects of how heat sinks work and can also help to clear up common misconceptions and design mistakes
ANS: Heat transfer theory helps explain practical aspects of how heat sinks work, and can also help to clear up common misconceptions and design mistakes.

QUESTION: Fix punctuation: Looking which airport for Gleneagles
ANS: Looking which airport for Gleneagles?

QUESTION: Fix punctuation: adjacent to the Oriental Hotel 48 Oriental Avenue tel 02236 04 00 Open daily for lunch and dinner
ANS:
adjacent to the Oriental Hotel, 48 Oriental Ave-nue, tel. 02-236 04 00. Open daily for lunch and dinner.