Starting with QGIS 3.x
for users new to GIS and/or new to QGIS that wish to utilise the key functions of v3.x
Intermediate Guide to QGIS 3.x
an intermediate level course that follows on from the Starting With course to take QGIS users further with the software
Mastering QGIS 3.x
a comprehensive course for new and experienced QGIS users
A. About QGIS
B. GIS Data Structures
C. Symbolising
D. Labeling
E. Map View
F. Selections
G. Layouts
H. Toolbox
I. Spatial Relationships
J. Editing

Actual course content is only accessible to users with a licenced account.
Courses cover a range of functions that are available in the GIS software.
These courses provide thorough tuition, covering the range of functions needed to undertake a project.
They include presentations, exercises and data.
Modules are function specific. If you have a good overview of the software, modules let you focus on a specific function from its basics through to its most complex aspects.
Read more guidance.