SSL Setup for Third Level Subdomains

I need an SSL solution for my VPS for third level subdomains. The primary goal is to secure these subdomains, as they are being utilized to simplify the opening process for sub-sub domains. The SSL should be efficient and cater to this specific need. Sample: http://kendall.williams.dcards.mobi/

Ideal skills and experience for this job include:
- Extensive knowledge and experience in SSL certificate installation and management.
- Familiarity with VPS environments.
- Ability to configure SSL for third level subdomains.