The below was excerpted from an article on Footballguys.com by Adam Harstad - the complete article is HERE.
How To Set Up MyFBG
The first step to setting up MyFBG is obviously going to be finding it. Luckily, given its importance, we've made it really easy to spot. Navigate to any page on the site and look up in the top-right corner at the toolbar. You'll see MyFBG sitting there on the navigation bar. Click through to be taken to your personal MyFBG page. If you're the type who prefers links, you can also get there by going to http://subscribers.footballguys.com/myfbg/my.php.
Once on your MyFBG page, it's time to link up some leagues. Since it's step one, the link to start is helpfully the first one you'll see.
As you start linking up leagues, you'll see the list under "OPTIONAL: pick a default profile" start to populate. This doesn't have a tremendous practical impact, but if you have one league that's your favorite, the one league where if you win there the season is a success even if you come in last in every other league, this is the place to select that league.
When you access any of the specific MyFBG pages, there will be a dropdown menu to select which league you want to see results for. If you haven't made a selection yet, MyFBG will default to showing you information for the league you select here. It's a nice way of maintaining focus.
But for now, let's just click the "Add/Edit/Link League Profiles" link. Here you'll have access to all the leagues you've already linked up, but since this is our first time, let's look for the "Add" button in the top right corner.
Clicking Add will open a prompt to please name the league. The name you use here doesn't matter, so select something that will make it easier to distinguish between leagues later on. You can go ahead and create a profile now for every league you plan on participating in this year, or you can just create one and come back later to do the rest.
The Add button will add a league profile to your list, but you still need to link that profile to an actual league. So click "Link to League (Roster Sync)". This will pull up a list of league hosts that are compatible with MyFBG. At the moment, compatible hosting sites are Yahoo! Fantasy, ESPN Fantasy, NFL Fantasy, CBS Sports, MyFantasyLeague, FFPC, RT Sports, and Fleaflicker.
If you use a league host that's not on that list, unfortunately MyFBG won't be able to automatically track that league for you at this time, but more hosts will be added in the future, so please send support a note expressing your interest!
If you do use one of those hosting services, then select it from the list and enter your login information so that MyFBGs can retreive your league details. Logging in should provide you with a list of all leagues you participate in on that service, so select the one you want to link to this particular league profile. If you're in multiple leagues on a single service, (say if you have a work league and a family league that are both on ESPN Fantasy), you can use multiple league profiles and link them all to different leagues.
Linking a league will allow MyFBG to automatically pull the names of all of the teams in the league, as well as all of the rosters. Unfortunately, at this time it isn't capable of pulling scoring details and lineup settings. Entering your custom scoring and lineup settings will allow MyFBG to tailor all of its fantasy football advice to best fit your particular league. The ability to automatically fill out scoring and lineup settings is planned for a future version, but for now we'll have to enter them manually.
Click the "Settings", "Scoring", and "Lineup" buttons and finish filling out all of the relevant information, then don't forget to select "Teams & Rosters" and indicate which team is yours.
Congratulations, you have now created and linked a league profile and unlocked all of the goodness that MyFBG has in store for you. If you want to, feel free to create more profiles and link more leagues at this time, or you can return later. When you're ready to go, click the "Return to MyFBG" link in the top-right corner.
Before you leave, you might have noticed that after linking up each league a new option was added to the profile saying "Sync Rosters Now". By default, MyFBG will update all of the rosters in your leagues once per day. If something dramatic changes, though—say, someone makes a blockbuster trade— and you want to use MyFBG to see how it affects the balance of power, you can select this to force an immediate roster sync.