Thanks Pompey, I understand.
I'm playing as Braunschweig. Yes, it has $0 budget for transfer.
So let me get this straight. My "Transfer Budget" handles the fee i need to pay to get purchase players?
My salary buget handles my players wages be it Free Agents or Purchase Players?
Also is it 25 man to a roster?
First Team
You can have more than 25 players in your team. But you can only register 25 players to play in the league. Players below the age of 21 don't require registration I think. Excess players that don't fit in your registration, you can send them out on a season loan to other teams so they improve by getting play time. Young players can either be put in the youth squad or in the reserve/second squad (England has reserve league, Spain has second teams that participate in the same league but lower divisions).
Your money is divided between transfer budget and salary budget. You can move them back and forth to suit your needs.
You should play with a bigger team so that you can make mistakes and still get things right. Try playing with a team like Manchester City, Arsenal, Real Madrid, or Juventus.
In football, teams with resources buy players to fit their tactics. Teams with low resources create tactics to make sure they get the best out of the players they have.
Basic Formations
4-4-2: Balanced between defense and attack.
4-3-3: Useful for position play and having strength in the midfield as well as wide options.
4-2-3-1: Good for recovering the ball due to there being 2 CDM's and starting a quick counter attack.
All other formations are deviations more or less and are useful for things you want to accomplish or for the players you have. But the formations stated above are the 3 most common ones.
Roles
In the NFL you have specialized roles like the quarterback, the running back, wide receivers, tight end, etc.. In football its the same but their roles are more unique and they all contribute in their own way.
Likes say you use a regular holding 4-3-3 (4 at the back, 1CDM, 2CM, 2 Wingers, 1 ST).
Your fullbacks (LB and RB), their role is to go up and add width to the midfield as well as to cross the ball the players in the box if they make it all the way to the final third. The players in the box will try to head the ball or kick the ball into the goal. They also have to trackback to defend the wings if the opposing team starts a counter attack.
You centerbacks (CB), their role is to dispossess the opponent and clear away the ball so that the goalkeeper doesn't find himself in an undesirable situation.
The Center Defensive Midfielder (CDM), his role is to sweep up plays in the midfield before they start or to intercept passes that may be dangerous to you in the final third.
The Center Midfielders (CM). They both help maintain possession in the midfield and pass the ball forward. You may have one set as a playmaker (usually your best passer who has the mentality to create plays and helps your team start attacks). The other midfielder may be a Box-to-Box player who goes up and down to help attack and defend (needs good stamina for this and speed helps too). Or you may have an additional ball winner if you need to be more defensive in the midfield and need to recover possession faster. Having 2 playmakers usually slows down your team as the playmaker tends to dictate the tempo and takes his time finding a position where he can do ideal passes.
The Wingers can either run forward and cross the ball to your striker or to your CM's in the box. Wingers can also be played as inside forwards and they cut in to try to score (like Cristiano Ronaldo or Arjen Robben). For wingers that cut in, it's best if their strong foot is the foot that faces inwards (right foot for LW and left foot for RW).
The striker's main role is to score. He can also help set up plays by passing the ball backwards or holding the ball and waiting for teammates to come in to get into open positions. Striker's dont always have to be fast. They can be strong or technical as well. Use them to their best of their abilities. The striker may even be useful for getting your wingers to score instead.