You might want to have a look at MOOC (essentially online courses). Many of them you can audit for free, even if they keep 'encouraging' you to purchase a certificate. I have yet to find any that deal specifically with Greek or Latin learning but there are several on other aspects of classical studies and will help to round out your education and inform you on the context of what you are reading elsewhere. These are all courses I have taken in general order of how interesting or useful I felt they were.
- Roman Architecture by Yale University via Coursera (https://www.coursera.org/learn/roman-architecture)
- The Ancient Greek Hero by Harvard University via EdX (https://www.edx.org/course/ancient-greek-hero-harvardx-hum2x-0)
- Health and Wellbeing in the Ancient World by Open University via Futurelearn (https://www.futurelearn.com/courses/ancient-health)
These are also available but I haven't personally taken them so I have no idea on their content or quality.
- The Changing Landscape of Ancient Rome. Archaeology and History of the Palatine Hill by Sapienza University of Rome via Coursea (https://www.coursera.org/learn/palatine-hill-archaeology-history)
- Western Civilization: Ancient and Medieval Europe by Arizona State University via EdX (https://www.edx.org/course/western-civilization-ancient-medieval-asux-hst102x-4)
- Roman Art and Archaeology by University of Arizona via Coursera (https://www.coursera.org/learn/roman-art-archaeology)
- *Ancient Philosophy: Plato & His Predecessors by University of Pennsylvania via Coursera (https://www.coursera.org/learn/plato)
- Ancient Philosophy: Aristotle and His Successors by University of Pennsylvania via Coursera (https://www.coursera.org/learn/aristotle)
- Arch of Titus: Rome and the Menorah by Yeshiva University via Coursera (https://www.coursera.org/learn/archoftitus)
- The Ancient Greeks by Wesleyan University via Coursera (https://www.coursera.org/learn/ancient-greeks)
- Hadrian's Wall: Life on the Roman Frontier by Newcastle University via Futurelearn (https://www.futurelearn.com/courses/hadrians-wall?lr=12)