Reversing - Yes it's hard to start with but fairly easy to learn. Reversing a trailer round a corner is quite different from reversing one (mostly straight down a slipway, assuming you can turn it round by hand). The first time I tried reversing down a slipway I had to pull forward about a dozen times, the 4th time (which was the most recent) it was only three!
The second time I was out, someone came to launch as I was getting out. He stopped at right angles to the slip and reversed round in one movement - something for me to aspire to.
Getting good at reversing is just practice, just like tying shoelaces, learning to drive or algebra!