Let the problem resolve themselves
Some problems can be postponed if they are not urgent. Surprisingly, many of them are resolved by themselves after a while. Or we just realize we don't need to resolve them.
If another man can repair my car cheaply, I better pay to him.
Collect maximum information possible
Ask online forums.
Discuss with friends.
Draw mind map
I personally do it in Google spreadsheets. Table view could also be used for mind mapping and brain storming.
More classic way of mind map can be done via Mindmeister app, available both on the web and mobile.