If memory serves correct, Lee has its own locking ring mechanism as an add-on product to easily exchange out dies with their settings in tack.
I would assume your kit comes with a reloading manual, if it only comes with a small booklet, I would recommend heading to the store and getting a larger manual. Any of the major brands will do and they all include the basic educational and historical contexts followed by load data. I had the hornady book when I started off and it was great, I only bought other manuals to expand align with my expanding powder reserves as I started reloading the last time we saw large shortages so I had to pick up various powders at the time based on availability.
Overall I would focus on learning the basics and getting the motions right. Then look at ways to make things easier, like the tools your friend refered you to. Slow and steady wins the race and reloading can be quite an enjoyable experience.