Welcome to the board.
Judging from your post, you seem like a very serious and mindful lady, so I don't have any doubt that you will approach your training, the execution of these lifts, etc. with the utmost seriousness and care. I'm sure you'll be fine.
Take care and follow Rip's prescriptions for each of the lifts, and I have no doubt that you'll come at least very close to nailing the lifts on your own. Be patient, and select weight according to you comfort level in the beginning, so that you can focus on technique. Worry about pushing yourself a little later.
Come back and visit us with videos of your lifts, when you've gotten them as close to "perfect" as you think you can, and I'm sure we can give you the appopriate feedback when the time is right. And leave the trolls to us
-Stacey