Sigma is promoting its first user conference, offering early bird pricing for the event scheduled on March 5. Interested individuals can engage with Sigma through various channels, such as trying out the Sigma platform for free, exploring interactive demos, or scheduling a call. The company provides insights into AI applications and embedded analytics through its blog, which covers topics related to AI/ML engineering and product information. Sigma encourages community engagement by inviting users to join its community and stay updated through newsletters.