Partner with another tl or etl for starters. Then work on your learning plan. Get all certs done. Depending on the area, know your team! Grab a radio & PDA.
Start doing business walks, help guests, do salesplanners/pogs, ptm/mpg's, push clearance or truck, reshop, pog fills, exfs, cafs, FIFO checks, fixing zones, doing pc report, urgent news signing jobs, leadership status, ck your email, do gstl break coverage, tlod, backup register for frontend, pharmacy, operator or electronics, do backstocking or pulling autopulls, instocks, ad signing, & special tasks for lod or stl. Help other tm/tl with their stuff.
Now, take a break.
Remember that s*** rolls downhill and the folks at the bottom WILL throw it back.
Document everything. When self-review rolls back around you will be glad you did.
Always follow up. If a TM has an issue or concern always touch base with them so they know you are working on it. If you don't follow up it will look like you are just another TL who doesn't care, even if you addressed the issue.
Accountability. If you mess up, fess up. There is nothing worse than someone who makes excuses instead of saying I made the wrong decision and this is what I learned from it.