I cannot find any good information on how bringing up a player due to an expanded roster impacts the team or player. How do I make such a move? By merely promoting them? Does that bring their minimum salary to the ML minimum for all years going forward? Any information someone could provide would be greatly appreciated. 

A couple of things:

1)  It starts (or adds to) their ML service clock, but only for the "in-season" days they are actually on the ML roster.  Post-season days do not count.

2)  If they were not already on your 40-man roster, they will automatically be added to the 40 (if you have room), and their option clock starts ticking.  If they were already on the 40, then their option clock already was ticking.

3)  Their salary will increase to $327k if they were on a minor league contract.  As long as you demote them back to the minors before roll over to the next season, they will roll to next season on a minor league contract and their salary will revert back down to 55k.  But if they stay on the ML roster at roll over, they will roll on a major league contract at $343k for next season.

Awesome! Thank you!

At 64-76, I don't think you're bringing them up for a playoff run.    You can do it to A) protect your long-term signed players from injury B) give your legit prospects an extra 16-18 games of playing time.

Keep in mind that, if they don't have options, they'll have to clear waivers before you can demote them.

Everything tec posted is correct.

I have a DiTR guy who can play good defence with a lot of power. My team will make the playoffs and I'm running into a looming fatigue situation. I'm always up against the salary cap so I'm very conscious about ML service time. If I brought up this player at the expanded roster deadline this season then demoted him before rollover and called him up at about the 60 game mark next season.... Would I have got that beautiful extra year of play from this player (4 seasons instead of 3) for under 400 thousand dollars?