Firstly, you are creating two email campaigns(not programs, campaigns) within one program. You can create two emails and send them separately through individual emails campaigns, both can exist within the same program. You need to filter for the industry on the smart list section of the email campaign.
Secondly, the better way to do this is to create segmentation based on industry and use the same email. You can make the emails sections dynamic and change contents in them as per the industry. Since you are new to Marketo, I would advise do it by the first way itself.
If you are facing any issue or need any help, please let me know.