Quote from cincinnatipretty much everything about how to work with hammer/source has been etched into the walls of the internet for years now. if you have an issue, trial and error (complemented by searching) is faster than waiting for replies on forums, and you learn more about how things work, which will help with other questions down the line.
https://developer.valvesoftware.com/wiki/Main_Page is a godsend! Also, TopHattWaffle and 3kliksphillip on youtube have an array of useful Hammer tutorials on most things (and they're really concise and knowledgeable instructors).