How to make a simple twitter bot...

Hi guys - just wondering if you could help me create a simple bot. I'm new at this and would love to get some pointers. I'm trying to find a way to search for tweets containing keywords and then pasting these tweets on a google sheet (preferably with another column with the account name). Not sure if a bot is the right thing for this, but I'm organizing an event and would like to find a way to get a list of twitter accounts that could be interested. Thanks in advance for the help!