A large archive of many EO products in one place
EO Browser makes it possible to browse and compare full resolution images from the a complete archive of Sentinel-1, Sentinel-2, Sentinel-3, Sentinel-5P, ESA’s archive of Landsat 5, 7 and 8, global coverage of Landsat 8, Envisat Meris, Proba-V, MODIS and GIBS products. You simply go to your area of interest, select criteria such as time range and cloud coverage, and inspect the resulting data from different sources.
For beginners in Earth Observation, the following simple exercises are available as resources: Exercise_EO Browser_Air pollution.pdf , Exercise_EO Browser_wildfires.pdf , Exercise_EO Browser_Volcanology.pdf.
More advanced users can find case studies on those same topics at https://www.sentinel-hub.com/explore/education. Developed using Jupyter Notebook technology, these case studies contain a mixture of codes in python language, explanations, figures, links, equations, etc.