The tool barn should be fairly easy to spot.
Once inside, there will be a door to your right and if you keep walking you will see a door to your left.
The room on the left will have a door on your immediate left that will have most of the tools you will need.
Because all tools are shared, please make sure to take care of the tools that you use. Wash paintbrushes when done, return everything to its place, keep tools in good condition, etc…