Wipe off dirt
Firstly, you need to wipe off all of the dirt that is on the garden hand tools with your rag. Make sure to get off as much dirt and debris as possible.
You can soak the metal parts of the garden tools in a mixture of 2 parts bleach and 3 parts water. Use a deep sink if you have one or just take a plastic tub and soak the tools in there for about 15 minutes. Remember to only soak the metal parts of the tools in the mixture so that you do not damage the wooden handles. You can also soak your rag in the mixture so that you can use it to clean the tools more effectively.
Once you have soaked the garden tools in the bleach and water mixture, rinse them off properly under running water. You can use a sink or garden pipe for this purpose.
Take each tool after soaking and place it on an old beach towel so that it can properly dry out. Do one tool at a time so that there is ample time for all of them to dry completely.
Lubricate the tools
Use a little WD-40 lubricant spray on garden tools that have moving parts like shears or loppers. Wipe off the WD-40 and apply some 3 in 1 oil. After a few minutes, wipe off the oil using a dry rag.
If your garden hand tools have wooden handles, you can easily apply some linseed oil to help preserve the material.
Once everything is clean and dry you can store all the garden tools in their designated areas. Depending on the type of tool, some can be hung from the handles while others can be placed in a storage container for future use.