Start by stopping carbon mining and consumption.

 My latest NYT comment, on using iron in the ocean as a geo engineering carbon capture solutions:

The idea here is that "We (tech fixers) alone can fix the Climate catastrophe" . Well, we can! Stop producing and using carbon emissions now, worldwide. We can do this in an orderly way, starting with stopping drilling, then stopping mining. Industries reliant on this will be shut down in a similarly orderly fashion, and paid off with money, which is a fiction, so we can make as much as necessary.

You can't geo-engineer out of an ever increasing supply of carbon, especially when the geo-engineering itself would necessarily itself be a huge source of carbon emissions. 

Shutting down fuels would be a tremendous hit to the economy and culture. But guess what? It would be cheaper than a 2+ degree C future, which is what we bought with all that fuel.
Do you have the budget to put the methane back in the permafrost and somehow regrow the glaciers and polar ice?

We're now at the state where small cities are wiped out in single weather events. When the frequency and scope of these events exceeds the means to recover from them, the time for any action will be taken up in emigration, fanciful and ineffective prepping, and faith-based solutions of dubious efficacy.