Here are some resources that we recommend
The U.S. Department of Energy has some good introductory videos
Geothermal energy and heat pumps; hydropower; biofuels; solar PV; wind power and wind turbines
Some longer reads if you're particularly interested (all available online via SOLO)
Geothermal Power Generation: Developments and Innovation (2016)
Wind Power Generation (2016)
Design of Solar Thermal Power Plants (2019)
Fundamentals of Wind Farm Aerodynamic Layout Design (2022)
Geothermal Power Plants: Principles, Applications, Case Studies and Environmental Impact (2012)
Small Wind (2012)
Geothermal Energy Systems (2021)
Concentrating Solar Power Technology (2021)
Wind Energy Engineering (2017)
Solar PV Power: Design, Manufacturing and Applications from Sand to Systems (2021)
Annual Energy Outlook 2022, available here.
African Economic Outlook 2022, available here.
World Economic Outlook 2022, available here.
Here's the IEA's oral report for the year.
IRENA publishes Renewables Readiness Assessments here.
The economics of energy
Success of Geothermal Wells: A Global Study, available here.
Projected Costs of Generating Electricity 2020, available here.
Solar Energy Forecasting and Resource Assessment (2013)
A summary of this year's Annual Energy Outlook's implications about the costs of renewable generation resources can be found here.