As much as I like to disagree with treadheads, both Cav Guy and Tanker Steve are spot on.

PT and land nav are critical functions for new LTs. Get your unit lost a coupla times and you'll be in a deep hole.

Go to the gym and start working on cardio and core strength. Because of the mountains here, part of my aerobic routine is to strap on a ruck and work the stairs. As I posted elsewhere, wish I had figured out the core strength thing while I was still humping a ruck for the Army. I now hump one for the county here in the mountains, and I can tell you that my ability to hump serious loads has increased markedly since going on a core routine.

Consider joining a local orienteering club if there is one. They make land nav and cardio fun. If there isn't a club, get a partner (never go into my backcountry solo) and just go out on public land and work on your skills.

Learned a neat OPORD trick in Ranger school (unofficially from an NCO, not part of POI): As you listen to/read the next higher order, plant excerpts from that order straight into yours -- you can edit later. Higher's para 2, mission, goes into your para 1, "mission of higher headquarters" Your unit's order in para 3 execution becomes your para 2 mission. Missions of other units usually slide into para 1 also, etc. Streamlines the MDMP so you have more time to focus on the important stuff. Of course, you all have probably changed the order into something that none of us old timers would recognize.

Second everything else posted earlier.