Seems everyone and their brother are now doing "toolkits" to understand climate change. For instance here is the states we have https://toolkit.climate.gov/. It is pretty simple and provides access to basic data.
A more holistic approach is found with the League of Women Voters. The LWV have a history of providing a good review of any topic and worth the visit.
The United Nations has a good reference too and is found here. And for more info, the UN has this.
And finally, for this short intro, since travel and tourism account for 5% of the carbon emissions. check this one out for tourism impacts.