I've only been reloading for 10+ years so I'm no real expert. I will say a few things.
Never use Lee equipment. It really blows. Dillon has a great reputation but I've never used their stuff. Personally, I prefer Lyman products.
Get carbide resizing dies. Worth the extra $$.
I don't cast bullets. I think the risk in breathing lead fumes is very high. If you do decide to cast your own, make SURE you have more than an excellent exhausting system set up. Also, I don't like lead in the barrels of my guns. That said, however, copper in the barrels is just as bad! Again, that said, I haven't completely excluded the possibility that I might start casting bullets but I haven't decided for sure.
Accuracy is my goal. Therefore, I use a single stage press so I can get ammo as close to consistent and perfect as possible. Strategically, I load for each gun. 10 rounds and test, 10 rounds and test, 10 rounds and test, etc. When you get close to what you want, fine tune until you get it spot on. I have a .38 Spl. round for my wife's GP100 that gives same-hole accuracy at 25 feet.
Watch yourself. Reloading is NOT an activity to do while you're tired or after tipping a few back with the buds.
Safety first. Don't do anything that has not been recommended by a loading manual. Seriously. As a footnote, faster bullets are not always the most accurate and higher powered or heavier loads aren't always the most accurate either. Translation: More is NOT always better. You're not a scientist or an expert in flammables so no experimentation is allowed on your loading bench.
If you need a tool, buy it. Do not improvise 'cause it just ain't worth the trouble it can cause. You're running a miniature precision machine shop so do it right. By the same token, you do NOT have to pay tons of money for good equipment, either. Shop around and buy used from someone who no longer loads. Take a friend who knows the hobby to help you. Have that same guy teach you what to do. Then read at least a couple of loading manuals. It really doesn't take that long to read through them. Better to spend a week or two studying than the remainder of your lifetime with only six fingers or only one eye. Or worse, accompanying a family member to the ER.
Check out
GUNFORUMS THE PLACE TO TALK ABOUT ALL GUNS!. They have a reloading section and most of those guys know their stuff. What I would never do, however, is use a build recipe I got from an internet forum. Too risky.
Have fun! You'll enjoy the hobby.
--Wag--