Hi, Matt here and I can help you (22 years a webmaster, installed few osTicket websites in the past).
So you need the osTicket installation and e-mail setup? Please provide:
1. Your web hosting access details to (check and) install the osTicket script.
2. All e-mail accounts/addresses you intend to use for support tickets. If you intend to use Gmail, your hosting must support SSL (e.g. have a HTTPS certificate to connect securely with Google mail servers).
3. Any other details like using email templates that are included with osTicket (limited help for customizing them is part of this bid).
Looking forward to your reply,
Matt