STF has many resources available to you on site but Wikipedia, Memory Alpha and Beta are also excellent resources.
Gamemaster Department - This is your home department, there are a few resources to be found here. You can also ask questions and will receive advice from other GMs. First up the FAQ page or frequently asked questions. Check here first to see if it’s already been asked.
https://www.star-fleet.com/core/command/gmd/
STF Map
Lindsay Bayes has updated and created a new Star Trek map modified for our particular Fleets. It can be found here: Star Chart. [link currently not working externally but works from GMD MOTD]
The Reference Manual is a home grown encyclopedia for STF, it has entries on planets, people etc. GMs are allowed to write entries for this Manual, but you’ll need to check the GM Department for the latest submission requirements. This is a useful place to find information for a sim.
http://www.star-fleet.com/library/bookshelf/rm/
Vacancies on the GMD MOTD will be the place to look for a ship, here you can see which ships might be looking for a GM.
Mission Archives from the Amanda Noon Archive. The GM Department keeps a record of all sims and there are two good reasons for this. One, it helps our GMs keep track of where they have GMed and how many sims they have run for GM Rank Advancement. Two, it provides a useful database for GMs planning sims. Eventually the archive will be the place to go and see if the ship you are about to GM has been doing back to back battle sims. Or check that they haven’t done a sim very similar to the one you’re planning.
http://www.star-fleet.com/gmd/archive/
The Player’s Handbook - In the academy you can find a link to The Player’s Handbook. You need to be familiar with this document.
http://www.star-fleet.com/library/bookshelf/handbook/
Personnel Department - The Personnel Department is the place to go to find out about the ships in STF. Their ship profile page contains lots of information and is a good starting point. You could also ask the Personnel staff for information that they may have regarding ships.
This is all good research and a great starting point but don’t forget to actually go read possible ships and see if you like the feel of it. Chat with the Command staff, find out what they expect of the GM and see if it matches with your ideas. A good match now will make for a much easier sim be it a training one or later on when you’ve got some experience.
https://www.star-fleet.com/core/command/pdept/