So I know it's bad to clean out tanks and stuff with soap. But what about hand washing procedures? Should I wait a certain amount of time after washing my hands before reaching into the tank or handling tank related items?
NEVER wash fish tanks or dec in soaps of any kind.
You should wash you hands and rinse thoroughly before putting them in the tank for whatever reason and before/after cleaning it. Just rinse the soap really well and you can go right into the tank :)
I avoid heavily perfumed soaps on principle so I don't know if any are worse than others (Dawn vs. sunlight for example)