Yes, please. I'll take anything you care to divulge. Getting nowhere trying to figure it out myself. Don't know how to practice this game. Keep dying way too much.
One of the aspects a lot of new players struggle with is that standing still makes your aim better, but standing still makes you vastly easier to hit.
You can always run your own server and join it locally, or join one of the servers that has nobody on it at the moment, and practice practice practice just running around and aiming at stuff.
Jump jets take a bit of practice. Holding W or S will move you forward or backward in the direction you're looking (torso rotation), not the direction your feet are travelling.
When playing on a live match, feel free to let your team know that you're new and open to advice. Also, ask if anybody wants a wingman, take a non-LRM mech, and just follow along behind them and do whatever they do.
When your team looks like it's retreating, you should retreat (even if you don't know why) and regroup.
Tracked vehicles are currently getting stuck on all sorts of things. Until this gets adjusted (next patch?) I would avoid them as it's very frustrating and easy to have happen.
Don't get suckered chasing people deep into their territory unless you're fine with getting killed for it.
Expect to die a lot.