Congrats on your transplant!!!
Tremors are common, and do get better the further out you are, that said there are days I still get it quite bad and I am 6 years out..
Weight gain is common and often if you don't nip it in the bud it can become a problem, exercise is the key with that one and being aware of what you are eating. Keeping in mind that our whole lives we have pushed calories to gain weight to no avail. Post tx you don't have the same demands or expenditure on your body as what it was to stay alive pre tx...
Get yourself into a routine as soon as possible, insomina again can be another thing you may have to deal with, but what you don't want to do is get use to staying up all night and then sleeping all day, it will mess with your meds and levels. In the early days I had major issues with insomina and often wouldn't get to bed until around 3am but I would always force myself to get up at 6am. Eventually you will get into a proper sleeping cycle but it can do your head in when you are trying to over come it. My body would be physically exhausted but for what ever reason sleep evades you.
Go easy on the arm weights initially, wait for your sternum to heal (depending on your incision) I was made do arm weights the next day post tx and due to that my sternum shifted and eventually knitted crooked, I ended up having my wire removed due to an abscess 12 months post tx my sternum is now literally shattered, in around 8 or more pieces and for that I will remain on pain killers due to nothing surgically can be done.
Just a few sugestions from my own experience, hope it helps
cf/cf/tx 2002